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Finding the Fourth Proportional to 42,442, 63,214.68 and 40,221.52

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Solution

The fourth proportional to 42,442, 63,214.68 and 40,221.52 is: 59,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,442 : 63,214.68 = 40,221.52 : x
  2. Step 2: Convert to fraction form
    42,442/63,214.68 = 40,221.52/x
  3. Step 3: Cross multiply
    42,442x = 63,214.68 × 40,221.52
  4. Step 4: Simplify right side
    42,442x = 2,542,590,515.91
  5. Step 5: Solve for x
    x = 2,542,590,515.91/42,442
  6. Step 6: Final answer
    x = 59,907.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.