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Finding the Fourth Proportional to 67,692, 93,402 and 43,815.36

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Solution

The fourth proportional to 67,692, 93,402 and 43,815.36 is: 60,456.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,692 : 93,402 = 43,815.36 : x
  2. Step 2: Convert to fraction form
    67,692/93,402 = 43,815.36/x
  3. Step 3: Cross multiply
    67,692x = 93,402 × 43,815.36
  4. Step 4: Simplify right side
    67,692x = 4,092,442,254.72
  5. Step 5: Solve for x
    x = 4,092,442,254.72/67,692
  6. Step 6: Final answer
    x = 60,456.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.