Home / 82,974.08-124,344.48-36,128.72

Finding the Fourth Proportional to 82,974.08, 124,344.48 and 36,128.72

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Solution

The fourth proportional to 82,974.08, 124,344.48 and 36,128.72 is: 54,142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,974.08 : 124,344.48 = 36,128.72 : x
  2. Step 2: Convert to fraction form
    82,974.08/124,344.48 = 36,128.72/x
  3. Step 3: Cross multiply
    82,974.08x = 124,344.48 × 36,128.72
  4. Step 4: Simplify right side
    82,974.08x = 4,492,406,901.47
  5. Step 5: Solve for x
    x = 4,492,406,901.47/82,974.08
  6. Step 6: Final answer
    x = 54,142.29

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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.