Home / 84,473.40-116,439.28-66,540

Finding the Fourth Proportional to 84,473.40, 116,439.28 and 66,540

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Solution

The fourth proportional to 84,473.40, 116,439.28 and 66,540 is: 91,719.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,473.40 : 116,439.28 = 66,540 : x
  2. Step 2: Convert to fraction form
    84,473.40/116,439.28 = 66,540/x
  3. Step 3: Cross multiply
    84,473.40x = 116,439.28 × 66,540
  4. Step 4: Simplify right side
    84,473.40x = 7,747,869,691.20
  5. Step 5: Solve for x
    x = 7,747,869,691.20/84,473.40
  6. Step 6: Final answer
    x = 91,719.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.