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Finding the Fourth Proportional to 42,001.60, 62,937.60 and 36,428.80

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Solution

The fourth proportional to 42,001.60, 62,937.60 and 36,428.80 is: 54,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,001.60 : 62,937.60 = 36,428.80 : x
  2. Step 2: Convert to fraction form
    42,001.60/62,937.60 = 36,428.80/x
  3. Step 3: Cross multiply
    42,001.60x = 62,937.60 × 36,428.80
  4. Step 4: Simplify right side
    42,001.60x = 2,292,741,242.88
  5. Step 5: Solve for x
    x = 2,292,741,242.88/42,001.60
  6. Step 6: Final answer
    x = 54,587.00

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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.