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Finding the Fourth Proportional to 73,104.20, 109,656.30 and 42,000.20

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Solution

The fourth proportional to 73,104.20, 109,656.30 and 42,000.20 is: 63,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,104.20 : 109,656.30 = 42,000.20 : x
  2. Step 2: Convert to fraction form
    73,104.20/109,656.30 = 42,000.20/x
  3. Step 3: Cross multiply
    73,104.20x = 109,656.30 × 42,000.20
  4. Step 4: Simplify right side
    73,104.20x = 4,605,586,531.26
  5. Step 5: Solve for x
    x = 4,605,586,531.26/73,104.20
  6. Step 6: Final answer
    x = 63,000.30

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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.