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Finding the Fourth Proportional to 90,876.80, 125,411.28 and 50,592.32

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Solution

The fourth proportional to 90,876.80, 125,411.28 and 50,592.32 is: 69,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.80 : 125,411.28 = 50,592.32 : x
  2. Step 2: Convert to fraction form
    90,876.80/125,411.28 = 50,592.32/x
  3. Step 3: Cross multiply
    90,876.80x = 125,411.28 × 50,592.32
  4. Step 4: Simplify right side
    90,876.80x = 6,344,847,609.37
  5. Step 5: Solve for x
    x = 6,344,847,609.37/90,876.80
  6. Step 6: Final answer
    x = 69,818.12

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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.