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Finding the Fourth Proportional to 61,689, 92,334.84 and 40,646.52

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Solution

The fourth proportional to 61,689, 92,334.84 and 40,646.52 is: 60,838.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689 : 92,334.84 = 40,646.52 : x
  2. Step 2: Convert to fraction form
    61,689/92,334.84 = 40,646.52/x
  3. Step 3: Cross multiply
    61,689x = 92,334.84 × 40,646.52
  4. Step 4: Simplify right side
    61,689x = 3,753,089,920.76
  5. Step 5: Solve for x
    x = 3,753,089,920.76/61,689
  6. Step 6: Final answer
    x = 60,838.88

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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.