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Finding the Fourth Proportional to 42,540.03, 63,810.04 and 11,374.47

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Solution

The fourth proportional to 42,540.03, 63,810.04 and 11,374.47 is: 17,061.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.03 : 63,810.04 = 11,374.47 : x
  2. Step 2: Convert to fraction form
    42,540.03/63,810.04 = 11,374.47/x
  3. Step 3: Cross multiply
    42,540.03x = 63,810.04 × 11,374.47
  4. Step 4: Simplify right side
    42,540.03x = 725,805,385.68
  5. Step 5: Solve for x
    x = 725,805,385.68/42,540.03
  6. Step 6: Final answer
    x = 17,061.70

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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.