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Finding the Fourth Proportional to 87,737.79, 121,077.79 and 47,451.57

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Solution

The fourth proportional to 87,737.79, 121,077.79 and 47,451.57 is: 65,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,737.79 : 121,077.79 = 47,451.57 : x
  2. Step 2: Convert to fraction form
    87,737.79/121,077.79 = 47,451.57/x
  3. Step 3: Cross multiply
    87,737.79x = 121,077.79 × 47,451.57
  4. Step 4: Simplify right side
    87,737.79x = 5,745,331,227.63
  5. Step 5: Solve for x
    x = 5,745,331,227.63/87,737.79
  6. Step 6: Final answer
    x = 65,482.97

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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.