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Finding the Fourth Proportional to 90,871.78, 125,414.83 and 52,124.74

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Solution

The fourth proportional to 90,871.78, 125,414.83 and 52,124.74 is: 71,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.78 : 125,414.83 = 52,124.74 : x
  2. Step 2: Convert to fraction form
    90,871.78/125,414.83 = 52,124.74/x
  3. Step 3: Cross multiply
    90,871.78x = 125,414.83 × 52,124.74
  4. Step 4: Simplify right side
    90,871.78x = 6,537,215,405.89
  5. Step 5: Solve for x
    x = 6,537,215,405.89/90,871.78
  6. Step 6: Final answer
    x = 71,938.90

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1.5x scale

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.