Home / 83,387.03-115,074.15-45,661.28

Finding the Fourth Proportional to 83,387.03, 115,074.15 and 45,661.28

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Solution

The fourth proportional to 83,387.03, 115,074.15 and 45,661.28 is: 63,012.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,387.03 : 115,074.15 = 45,661.28 : x
  2. Step 2: Convert to fraction form
    83,387.03/115,074.15 = 45,661.28/x
  3. Step 3: Cross multiply
    83,387.03x = 115,074.15 × 45,661.28
  4. Step 4: Simplify right side
    83,387.03x = 5,254,432,983.91
  5. Step 5: Solve for x
    x = 5,254,432,983.91/83,387.03
  6. Step 6: Final answer
    x = 63,012.59

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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.