Home / 78,502.26-108,331.93-42,691.46

Finding the Fourth Proportional to 78,502.26, 108,331.93 and 42,691.46

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Solution

The fourth proportional to 78,502.26, 108,331.93 and 42,691.46 is: 58,913.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,502.26 : 108,331.93 = 42,691.46 : x
  2. Step 2: Convert to fraction form
    78,502.26/108,331.93 = 42,691.46/x
  3. Step 3: Cross multiply
    78,502.26x = 108,331.93 × 42,691.46
  4. Step 4: Simplify right side
    78,502.26x = 4,624,847,768.02
  5. Step 5: Solve for x
    x = 4,624,847,768.02/78,502.26
  6. Step 6: Final answer
    x = 58,913.56

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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.