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Finding the Fourth Proportional to 78,508.68, 108,339.72 and 44,520.36

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Solution

The fourth proportional to 78,508.68, 108,339.72 and 44,520.36 is: 61,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,508.68 : 108,339.72 = 44,520.36 : x
  2. Step 2: Convert to fraction form
    78,508.68/108,339.72 = 44,520.36/x
  3. Step 3: Cross multiply
    78,508.68x = 108,339.72 × 44,520.36
  4. Step 4: Simplify right side
    78,508.68x = 4,823,323,336.70
  5. Step 5: Solve for x
    x = 4,823,323,336.70/78,508.68
  6. Step 6: Final answer
    x = 61,436.82

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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.