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Finding the Fourth Proportional to 60,000.80, 90,001.20 and 18,442.40

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Solution

The fourth proportional to 60,000.80, 90,001.20 and 18,442.40 is: 27,663.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,000.80 : 90,001.20 = 18,442.40 : x
  2. Step 2: Convert to fraction form
    60,000.80/90,001.20 = 18,442.40/x
  3. Step 3: Cross multiply
    60,000.80x = 90,001.20 × 18,442.40
  4. Step 4: Simplify right side
    60,000.80x = 1,659,838,130.88
  5. Step 5: Solve for x
    x = 1,659,838,130.88/60,000.80
  6. Step 6: Final answer
    x = 27,663.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.