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Finding the Fourth Proportional to 90,609.60, 125,042.10 and 52,876.56

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Solution

The fourth proportional to 90,609.60, 125,042.10 and 52,876.56 is: 72,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,609.60 : 125,042.10 = 52,876.56 : x
  2. Step 2: Convert to fraction form
    90,609.60/125,042.10 = 52,876.56/x
  3. Step 3: Cross multiply
    90,609.60x = 125,042.10 × 52,876.56
  4. Step 4: Simplify right side
    90,609.60x = 6,611,796,103.18
  5. Step 5: Solve for x
    x = 6,611,796,103.18/90,609.60
  6. Step 6: Final answer
    x = 72,970.15

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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.