Home / 82,318.74-123,346.86-52,712.20

Finding the Fourth Proportional to 82,318.74, 123,346.86 and 52,712.20

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Solution

The fourth proportional to 82,318.74, 123,346.86 and 52,712.20 is: 78,984.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,318.74 : 123,346.86 = 52,712.20 : x
  2. Step 2: Convert to fraction form
    82,318.74/123,346.86 = 52,712.20/x
  3. Step 3: Cross multiply
    82,318.74x = 123,346.86 × 52,712.20
  4. Step 4: Simplify right side
    82,318.74x = 6,501,884,353.69
  5. Step 5: Solve for x
    x = 6,501,884,353.69/82,318.74
  6. Step 6: Final answer
    x = 78,984.26

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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.