Home / 86,141.04-129,211.78-26,981.88

Finding the Fourth Proportional to 86,141.04, 129,211.78 and 26,981.88

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Solution

The fourth proportional to 86,141.04, 129,211.78 and 26,981.88 is: 40,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,141.04 : 129,211.78 = 26,981.88 : x
  2. Step 2: Convert to fraction form
    86,141.04/129,211.78 = 26,981.88/x
  3. Step 3: Cross multiply
    86,141.04x = 129,211.78 × 26,981.88
  4. Step 4: Simplify right side
    86,141.04x = 3,486,376,742.55
  5. Step 5: Solve for x
    x = 3,486,376,742.55/86,141.04
  6. Step 6: Final answer
    x = 40,472.89

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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.