Home / 87,588.14-120,489.12-76,784.36

Finding the Fourth Proportional to 87,588.14, 120,489.12 and 76,784.36

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Solution

The fourth proportional to 87,588.14, 120,489.12 and 76,784.36 is: 105,627.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,588.14 : 120,489.12 = 76,784.36 : x
  2. Step 2: Convert to fraction form
    87,588.14/120,489.12 = 76,784.36/x
  3. Step 3: Cross multiply
    87,588.14x = 120,489.12 × 76,784.36
  4. Step 4: Simplify right side
    87,588.14x = 9,251,679,363.72
  5. Step 5: Solve for x
    x = 9,251,679,363.72/87,588.14
  6. Step 6: Final answer
    x = 105,627.08

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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.