Home / 83,451.12-115,165.20-45,727.68

Finding the Fourth Proportional to 83,451.12, 115,165.20 and 45,727.68

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Solution

The fourth proportional to 83,451.12, 115,165.20 and 45,727.68 is: 63,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,451.12 : 115,165.20 = 45,727.68 : x
  2. Step 2: Convert to fraction form
    83,451.12/115,165.20 = 45,727.68/x
  3. Step 3: Cross multiply
    83,451.12x = 115,165.20 × 45,727.68
  4. Step 4: Simplify right side
    83,451.12x = 5,266,237,412.74
  5. Step 5: Solve for x
    x = 5,266,237,412.74/83,451.12
  6. Step 6: Final answer
    x = 63,105.65

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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.