Home / 83,491.20-115,215.36-45,764.16

Finding the Fourth Proportional to 83,491.20, 115,215.36 and 45,764.16

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Solution

The fourth proportional to 83,491.20, 115,215.36 and 45,764.16 is: 63,153.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,491.20 : 115,215.36 = 45,764.16 : x
  2. Step 2: Convert to fraction form
    83,491.20/115,215.36 = 45,764.16/x
  3. Step 3: Cross multiply
    83,491.20x = 115,215.36 × 45,764.16
  4. Step 4: Simplify right side
    83,491.20x = 5,272,734,169.50
  5. Step 5: Solve for x
    x = 5,272,734,169.50/83,491.20
  6. Step 6: Final answer
    x = 63,153.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.