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Finding the Fourth Proportional to 57,801.76, 86,720.13 and 40,967.35

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Solution

The fourth proportional to 57,801.76, 86,720.13 and 40,967.35 is: 61,463.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.76 : 86,720.13 = 40,967.35 : x
  2. Step 2: Convert to fraction form
    57,801.76/86,720.13 = 40,967.35/x
  3. Step 3: Cross multiply
    57,801.76x = 86,720.13 × 40,967.35
  4. Step 4: Simplify right side
    57,801.76x = 3,552,693,917.76
  5. Step 5: Solve for x
    x = 3,552,693,917.76/57,801.76
  6. Step 6: Final answer
    x = 61,463.42

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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.