Home / 83,445.21-115,153.65-45,203.90

Finding the Fourth Proportional to 83,445.21, 115,153.65 and 45,203.90

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Solution

The fourth proportional to 83,445.21, 115,153.65 and 45,203.90 is: 62,380.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,445.21 : 115,153.65 = 45,203.90 : x
  2. Step 2: Convert to fraction form
    83,445.21/115,153.65 = 45,203.90/x
  3. Step 3: Cross multiply
    83,445.21x = 115,153.65 × 45,203.90
  4. Step 4: Simplify right side
    83,445.21x = 5,205,393,503.47
  5. Step 5: Solve for x
    x = 5,205,393,503.47/83,445.21
  6. Step 6: Final answer
    x = 62,380.97

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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.