Home / 83,135.20-114,725.28-45,408.64

Finding the Fourth Proportional to 83,135.20, 114,725.28 and 45,408.64

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Solution

The fourth proportional to 83,135.20, 114,725.28 and 45,408.64 is: 62,663.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,135.20 : 114,725.28 = 45,408.64 : x
  2. Step 2: Convert to fraction form
    83,135.20/114,725.28 = 45,408.64/x
  3. Step 3: Cross multiply
    83,135.20x = 114,725.28 × 45,408.64
  4. Step 4: Simplify right side
    83,135.20x = 5,209,518,938.42
  5. Step 5: Solve for x
    x = 5,209,518,938.42/83,135.20
  6. Step 6: Final answer
    x = 62,663.22

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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.