Home / 86,154.49-129,231.85-41,787.78

Finding the Fourth Proportional to 86,154.49, 129,231.85 and 41,787.78

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Solution

The fourth proportional to 86,154.49, 129,231.85 and 41,787.78 is: 62,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,154.49 : 129,231.85 = 41,787.78 : x
  2. Step 2: Convert to fraction form
    86,154.49/129,231.85 = 41,787.78/x
  3. Step 3: Cross multiply
    86,154.49x = 129,231.85 × 41,787.78
  4. Step 4: Simplify right side
    86,154.49x = 5,400,312,116.79
  5. Step 5: Solve for x
    x = 5,400,312,116.79/86,154.49
  6. Step 6: Final answer
    x = 62,681.73

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1.5x scale

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.