Home / 86,595.10-129,892.65-76,680.70

Finding the Fourth Proportional to 86,595.10, 129,892.65 and 76,680.70

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Solution

The fourth proportional to 86,595.10, 129,892.65 and 76,680.70 is: 115,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,595.10 : 129,892.65 = 76,680.70 : x
  2. Step 2: Convert to fraction form
    86,595.10/129,892.65 = 76,680.70/x
  3. Step 3: Cross multiply
    86,595.10x = 129,892.65 × 76,680.70
  4. Step 4: Simplify right side
    86,595.10x = 9,960,259,326.86
  5. Step 5: Solve for x
    x = 9,960,259,326.86/86,595.10
  6. Step 6: Final answer
    x = 115,021.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.