Home / 87,421.76-120,546.32-59,078.24

Finding the Fourth Proportional to 87,421.76, 120,546.32 and 59,078.24

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Solution

The fourth proportional to 87,421.76, 120,546.32 and 59,078.24 is: 81,463.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421.76 : 120,546.32 = 59,078.24 : x
  2. Step 2: Convert to fraction form
    87,421.76/120,546.32 = 59,078.24/x
  3. Step 3: Cross multiply
    87,421.76x = 120,546.32 × 59,078.24
  4. Step 4: Simplify right side
    87,421.76x = 7,121,664,424.08
  5. Step 5: Solve for x
    x = 7,121,664,424.08/87,421.76
  6. Step 6: Final answer
    x = 81,463.29

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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.