Home / 82,386.52-123,284.34-71,331.28

Finding the Fourth Proportional to 82,386.52, 123,284.34 and 71,331.28

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Solution

The fourth proportional to 82,386.52, 123,284.34 and 71,331.28 is: 106,741.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,386.52 : 123,284.34 = 71,331.28 : x
  2. Step 2: Convert to fraction form
    82,386.52/123,284.34 = 71,331.28/x
  3. Step 3: Cross multiply
    82,386.52x = 123,284.34 × 71,331.28
  4. Step 4: Simplify right side
    82,386.52x = 8,794,029,776.16
  5. Step 5: Solve for x
    x = 8,794,029,776.16/82,386.52
  6. Step 6: Final answer
    x = 106,741.12

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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.