Home / 87,176.64-120,259.14-56,979.66

Finding the Fourth Proportional to 87,176.64, 120,259.14 and 56,979.66

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Solution

The fourth proportional to 87,176.64, 120,259.14 and 56,979.66 is: 78,602.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,176.64 : 120,259.14 = 56,979.66 : x
  2. Step 2: Convert to fraction form
    87,176.64/120,259.14 = 56,979.66/x
  3. Step 3: Cross multiply
    87,176.64x = 120,259.14 × 56,979.66
  4. Step 4: Simplify right side
    87,176.64x = 6,852,324,909.09
  5. Step 5: Solve for x
    x = 6,852,324,909.09/87,176.64
  6. Step 6: Final answer
    x = 78,602.76

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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.