Home / 86,399.63-129,497.61-38,959.17

Finding the Fourth Proportional to 86,399.63, 129,497.61 and 38,959.17

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Solution

The fourth proportional to 86,399.63, 129,497.61 and 38,959.17 is: 58,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,399.63 : 129,497.61 = 38,959.17 : x
  2. Step 2: Convert to fraction form
    86,399.63/129,497.61 = 38,959.17/x
  3. Step 3: Cross multiply
    86,399.63x = 129,497.61 × 38,959.17
  4. Step 4: Simplify right side
    86,399.63x = 5,045,120,123.87
  5. Step 5: Solve for x
    x = 5,045,120,123.87/86,399.63
  6. Step 6: Final answer
    x = 58,392.85

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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.