Home / 84,279.28-126,455.84-39,937.72

Finding the Fourth Proportional to 84,279.28, 126,455.84 and 39,937.72

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Solution

The fourth proportional to 84,279.28, 126,455.84 and 39,937.72 is: 59,924.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,279.28 : 126,455.84 = 39,937.72 : x
  2. Step 2: Convert to fraction form
    84,279.28/126,455.84 = 39,937.72/x
  3. Step 3: Cross multiply
    84,279.28x = 126,455.84 × 39,937.72
  4. Step 4: Simplify right side
    84,279.28x = 5,050,357,930.28
  5. Step 5: Solve for x
    x = 5,050,357,930.28/84,279.28
  6. Step 6: Final answer
    x = 59,924.08

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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.