Home / 86,143.04-129,214.78-26,983.88

Finding the Fourth Proportional to 86,143.04, 129,214.78 and 26,983.88

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Solution

The fourth proportional to 86,143.04, 129,214.78 and 26,983.88 is: 40,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.04 : 129,214.78 = 26,983.88 : x
  2. Step 2: Convert to fraction form
    86,143.04/129,214.78 = 26,983.88/x
  3. Step 3: Cross multiply
    86,143.04x = 129,214.78 × 26,983.88
  4. Step 4: Simplify right side
    86,143.04x = 3,486,716,117.75
  5. Step 5: Solve for x
    x = 3,486,716,117.75/86,143.04
  6. Step 6: Final answer
    x = 40,475.89

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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.