Home / 82,947.78-124,421.54-66,229.47

Finding the Fourth Proportional to 82,947.78, 124,421.54 and 66,229.47

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Solution

The fourth proportional to 82,947.78, 124,421.54 and 66,229.47 is: 99,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,947.78 : 124,421.54 = 66,229.47 : x
  2. Step 2: Convert to fraction form
    82,947.78/124,421.54 = 66,229.47/x
  3. Step 3: Cross multiply
    82,947.78x = 124,421.54 × 66,229.47
  4. Step 4: Simplify right side
    82,947.78x = 8,240,372,319.64
  5. Step 5: Solve for x
    x = 8,240,372,319.64/82,947.78
  6. Step 6: Final answer
    x = 99,344.10

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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.