Home / 91,778.08-137,319.36-54,358.24

Finding the Fourth Proportional to 91,778.08, 137,319.36 and 54,358.24

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Solution

The fourth proportional to 91,778.08, 137,319.36 and 54,358.24 is: 81,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,778.08 : 137,319.36 = 54,358.24 : x
  2. Step 2: Convert to fraction form
    91,778.08/137,319.36 = 54,358.24/x
  3. Step 3: Cross multiply
    91,778.08x = 137,319.36 × 54,358.24
  4. Step 4: Simplify right side
    91,778.08x = 7,464,438,727.53
  5. Step 5: Solve for x
    x = 7,464,438,727.53/91,778.08
  6. Step 6: Final answer
    x = 81,331.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.