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Finding the Fourth Proportional to 78,737.92, 108,655.63 and 44,745.79

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Solution

The fourth proportional to 78,737.92, 108,655.63 and 44,745.79 is: 61,747.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,737.92 : 108,655.63 = 44,745.79 : x
  2. Step 2: Convert to fraction form
    78,737.92/108,655.63 = 44,745.79/x
  3. Step 3: Cross multiply
    78,737.92x = 108,655.63 × 44,745.79
  4. Step 4: Simplify right side
    78,737.92x = 4,861,882,128.12
  5. Step 5: Solve for x
    x = 4,861,882,128.12/78,737.92
  6. Step 6: Final answer
    x = 61,747.66

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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.