Home / 83,647.22-115,433.65-45,921.78

Finding the Fourth Proportional to 83,647.22, 115,433.65 and 45,921.78

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Solution

The fourth proportional to 83,647.22, 115,433.65 and 45,921.78 is: 63,372.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,647.22 : 115,433.65 = 45,921.78 : x
  2. Step 2: Convert to fraction form
    83,647.22/115,433.65 = 45,921.78/x
  3. Step 3: Cross multiply
    83,647.22x = 115,433.65 × 45,921.78
  4. Step 4: Simplify right side
    83,647.22x = 5,300,918,679.90
  5. Step 5: Solve for x
    x = 5,300,918,679.90/83,647.22
  6. Step 6: Final answer
    x = 63,372.32

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1.5x scale

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.