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Finding the Fourth Proportional to 52,672.90, 78,894.15 and 40,893.70

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Solution

The fourth proportional to 52,672.90, 78,894.15 and 40,893.70 is: 61,251.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,672.90 : 78,894.15 = 40,893.70 : x
  2. Step 2: Convert to fraction form
    52,672.90/78,894.15 = 40,893.70/x
  3. Step 3: Cross multiply
    52,672.90x = 78,894.15 × 40,893.70
  4. Step 4: Simplify right side
    52,672.90x = 3,226,273,701.86
  5. Step 5: Solve for x
    x = 3,226,273,701.86/52,672.90
  6. Step 6: Final answer
    x = 61,251.11

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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.