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Finding the Fourth Proportional to 82,354.30, 123,531.45 and 40,882.30

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Solution

The fourth proportional to 82,354.30, 123,531.45 and 40,882.30 is: 61,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,354.30 : 123,531.45 = 40,882.30 : x
  2. Step 2: Convert to fraction form
    82,354.30/123,531.45 = 40,882.30/x
  3. Step 3: Cross multiply
    82,354.30x = 123,531.45 × 40,882.30
  4. Step 4: Simplify right side
    82,354.30x = 5,050,249,798.34
  5. Step 5: Solve for x
    x = 5,050,249,798.34/82,354.30
  6. Step 6: Final answer
    x = 61,323.45

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1.5x scale

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.