Home / 83,966.12-115,869.06-54,158.12

Finding the Fourth Proportional to 83,966.12, 115,869.06 and 54,158.12

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Solution

The fourth proportional to 83,966.12, 115,869.06 and 54,158.12 is: 74,735.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,966.12 : 115,869.06 = 54,158.12 : x
  2. Step 2: Convert to fraction form
    83,966.12/115,869.06 = 54,158.12/x
  3. Step 3: Cross multiply
    83,966.12x = 115,869.06 × 54,158.12
  4. Step 4: Simplify right side
    83,966.12x = 6,275,250,455.77
  5. Step 5: Solve for x
    x = 6,275,250,455.77/83,966.12
  6. Step 6: Final answer
    x = 74,735.51

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1.5x scale

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.