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Finding the Fourth Proportional to 83,756.88, 115,585.21 and 45,516.42

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Solution

The fourth proportional to 83,756.88, 115,585.21 and 45,516.42 is: 62,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,756.88 : 115,585.21 = 45,516.42 : x
  2. Step 2: Convert to fraction form
    83,756.88/115,585.21 = 45,516.42/x
  3. Step 3: Cross multiply
    83,756.88x = 115,585.21 × 45,516.42
  4. Step 4: Simplify right side
    83,756.88x = 5,261,025,021.04
  5. Step 5: Solve for x
    x = 5,261,025,021.04/83,756.88
  6. Step 6: Final answer
    x = 62,813.05

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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.