Home / 86,276.76-129,428.19-27,106.86

Finding the Fourth Proportional to 86,276.76, 129,428.19 and 27,106.86

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Solution

The fourth proportional to 86,276.76, 129,428.19 and 27,106.86 is: 40,664.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,276.76 : 129,428.19 = 27,106.86 : x
  2. Step 2: Convert to fraction form
    86,276.76/129,428.19 = 27,106.86/x
  3. Step 3: Cross multiply
    86,276.76x = 129,428.19 × 27,106.86
  4. Step 4: Simplify right side
    86,276.76x = 3,508,391,826.38
  5. Step 5: Solve for x
    x = 3,508,391,826.38/86,276.76
  6. Step 6: Final answer
    x = 40,664.39

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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.