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Finding the Fourth Proportional to 87,445.95, 120,672.78 and 49,207.62

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Solution

The fourth proportional to 87,445.95, 120,672.78 and 49,207.62 is: 67,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,445.95 : 120,672.78 = 49,207.62 : x
  2. Step 2: Convert to fraction form
    87,445.95/120,672.78 = 49,207.62/x
  3. Step 3: Cross multiply
    87,445.95x = 120,672.78 × 49,207.62
  4. Step 4: Simplify right side
    87,445.95x = 5,938,020,302.58
  5. Step 5: Solve for x
    x = 5,938,020,302.58/87,445.95
  6. Step 6: Final answer
    x = 67,905.04

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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.