Home / 78,520.64-108,419.31-60,342.57

Finding the Fourth Proportional to 78,520.64, 108,419.31 and 60,342.57

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Solution

The fourth proportional to 78,520.64, 108,419.31 and 60,342.57 is: 83,319.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.64 : 108,419.31 = 60,342.57 : x
  2. Step 2: Convert to fraction form
    78,520.64/108,419.31 = 60,342.57/x
  3. Step 3: Cross multiply
    78,520.64x = 108,419.31 × 60,342.57
  4. Step 4: Simplify right side
    78,520.64x = 6,542,299,938.55
  5. Step 5: Solve for x
    x = 6,542,299,938.55/78,520.64
  6. Step 6: Final answer
    x = 83,319.49

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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.