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Finding the Fourth Proportional to 78,487.68, 108,310.76 and 44,499.28

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Solution

The fourth proportional to 78,487.68, 108,310.76 and 44,499.28 is: 61,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,487.68 : 108,310.76 = 44,499.28 : x
  2. Step 2: Convert to fraction form
    78,487.68/108,310.76 = 44,499.28/x
  3. Step 3: Cross multiply
    78,487.68x = 108,310.76 × 44,499.28
  4. Step 4: Simplify right side
    78,487.68x = 4,819,750,836.25
  5. Step 5: Solve for x
    x = 4,819,750,836.25/78,487.68
  6. Step 6: Final answer
    x = 61,407.74

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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.