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Finding the Fourth Proportional to 48,000.80, 72,001.20 and 42,363.20

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Solution

The fourth proportional to 48,000.80, 72,001.20 and 42,363.20 is: 63,544.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,000.80 : 72,001.20 = 42,363.20 : x
  2. Step 2: Convert to fraction form
    48,000.80/72,001.20 = 42,363.20/x
  3. Step 3: Cross multiply
    48,000.80x = 72,001.20 × 42,363.20
  4. Step 4: Simplify right side
    48,000.80x = 3,050,201,235.84
  5. Step 5: Solve for x
    x = 3,050,201,235.84/48,000.80
  6. Step 6: Final answer
    x = 63,544.80

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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.