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Finding the Fourth Proportional to 63,920.76, 88,211.10 and 36,689.60

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Solution

The fourth proportional to 63,920.76, 88,211.10 and 36,689.60 is: 50,631.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,920.76 : 88,211.10 = 36,689.60 : x
  2. Step 2: Convert to fraction form
    63,920.76/88,211.10 = 36,689.60/x
  3. Step 3: Cross multiply
    63,920.76x = 88,211.10 × 36,689.60
  4. Step 4: Simplify right side
    63,920.76x = 3,236,429,974.56
  5. Step 5: Solve for x
    x = 3,236,429,974.56/63,920.76
  6. Step 6: Final answer
    x = 50,631.91

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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.