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Finding the Fourth Proportional to 87,519.71, 120,523.10 and 76,029.42

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Solution

The fourth proportional to 87,519.71, 120,523.10 and 76,029.42 is: 104,699.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,519.71 : 120,523.10 = 76,029.42 : x
  2. Step 2: Convert to fraction form
    87,519.71/120,523.10 = 76,029.42/x
  3. Step 3: Cross multiply
    87,519.71x = 120,523.10 × 76,029.42
  4. Step 4: Simplify right side
    87,519.71x = 9,163,301,579.68
  5. Step 5: Solve for x
    x = 9,163,301,579.68/87,519.71
  6. Step 6: Final answer
    x = 104,699.86

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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.