Home / 87,023.64-120,031.16-74,069.80

Finding the Fourth Proportional to 87,023.64, 120,031.16 and 74,069.80

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Solution

The fourth proportional to 87,023.64, 120,031.16 and 74,069.80 is: 102,164.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,023.64 : 120,031.16 = 74,069.80 : x
  2. Step 2: Convert to fraction form
    87,023.64/120,031.16 = 74,069.80/x
  3. Step 3: Cross multiply
    87,023.64x = 120,031.16 × 74,069.80
  4. Step 4: Simplify right side
    87,023.64x = 8,890,684,014.97
  5. Step 5: Solve for x
    x = 8,890,684,014.97/87,023.64
  6. Step 6: Final answer
    x = 102,164.01

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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.