Home / 87,281.35-120,453.41-65,733.08

Finding the Fourth Proportional to 87,281.35, 120,453.41 and 65,733.08

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Solution

The fourth proportional to 87,281.35, 120,453.41 and 65,733.08 is: 90,715.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,281.35 : 120,453.41 = 65,733.08 : x
  2. Step 2: Convert to fraction form
    87,281.35/120,453.41 = 65,733.08/x
  3. Step 3: Cross multiply
    87,281.35x = 120,453.41 × 65,733.08
  4. Step 4: Simplify right side
    87,281.35x = 7,917,773,143.91
  5. Step 5: Solve for x
    x = 7,917,773,143.91/87,281.35
  6. Step 6: Final answer
    x = 90,715.52

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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.