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Finding the Fourth Proportional to 83,409.55, 115,105.25 and 45,169.40

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Solution

The fourth proportional to 83,409.55, 115,105.25 and 45,169.40 is: 62,333.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,409.55 : 115,105.25 = 45,169.40 : x
  2. Step 2: Convert to fraction form
    83,409.55/115,105.25 = 45,169.40/x
  3. Step 3: Cross multiply
    83,409.55x = 115,105.25 × 45,169.40
  4. Step 4: Simplify right side
    83,409.55x = 5,199,235,225.96
  5. Step 5: Solve for x
    x = 5,199,235,225.96/83,409.55
  6. Step 6: Final answer
    x = 62,333.81

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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.