Home / 82,531.28-123,848.76-40,437.20

Finding the Fourth Proportional to 82,531.28, 123,848.76 and 40,437.20

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Solution

The fourth proportional to 82,531.28, 123,848.76 and 40,437.20 is: 60,681.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,531.28 : 123,848.76 = 40,437.20 : x
  2. Step 2: Convert to fraction form
    82,531.28/123,848.76 = 40,437.20/x
  3. Step 3: Cross multiply
    82,531.28x = 123,848.76 × 40,437.20
  4. Step 4: Simplify right side
    82,531.28x = 5,008,097,077.87
  5. Step 5: Solve for x
    x = 5,008,097,077.87/82,531.28
  6. Step 6: Final answer
    x = 60,681.20

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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.