Home / 86,209.78-129,333.28-26,242.94

Finding the Fourth Proportional to 86,209.78, 129,333.28 and 26,242.94

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Solution

The fourth proportional to 86,209.78, 129,333.28 and 26,242.94 is: 39,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,209.78 : 129,333.28 = 26,242.94 : x
  2. Step 2: Convert to fraction form
    86,209.78/129,333.28 = 26,242.94/x
  3. Step 3: Cross multiply
    86,209.78x = 129,333.28 × 26,242.94
  4. Step 4: Simplify right side
    86,209.78x = 3,394,085,376.42
  5. Step 5: Solve for x
    x = 3,394,085,376.42/86,209.78
  6. Step 6: Final answer
    x = 39,370.08

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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.