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Finding the Fourth Proportional to 61,689.77, 92,520.83 and 28,377.84

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Solution

The fourth proportional to 61,689.77, 92,520.83 and 28,377.84 is: 42,560.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,689.77 : 92,520.83 = 28,377.84 : x
  2. Step 2: Convert to fraction form
    61,689.77/92,520.83 = 28,377.84/x
  3. Step 3: Cross multiply
    61,689.77x = 92,520.83 × 28,377.84
  4. Step 4: Simplify right side
    61,689.77x = 2,625,541,168.52
  5. Step 5: Solve for x
    x = 2,625,541,168.52/61,689.77
  6. Step 6: Final answer
    x = 42,560.40

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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.