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Finding the Fourth Proportional to 83,756.80, 115,585.50 and 45,517.10

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Solution

The fourth proportional to 83,756.80, 115,585.50 and 45,517.10 is: 62,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,756.80 : 115,585.50 = 45,517.10 : x
  2. Step 2: Convert to fraction form
    83,756.80/115,585.50 = 45,517.10/x
  3. Step 3: Cross multiply
    83,756.80x = 115,585.50 × 45,517.10
  4. Step 4: Simplify right side
    83,756.80x = 5,261,116,875.84
  5. Step 5: Solve for x
    x = 5,261,116,875.84/83,756.80
  6. Step 6: Final answer
    x = 62,814.21

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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.