Home / 89,612.69-123,660.80-49,318.75

Finding the Fourth Proportional to 89,612.69, 123,660.80 and 49,318.75

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Solution

The fourth proportional to 89,612.69, 123,660.80 and 49,318.75 is: 68,057.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,612.69 : 123,660.80 = 49,318.75 : x
  2. Step 2: Convert to fraction form
    89,612.69/123,660.80 = 49,318.75/x
  3. Step 3: Cross multiply
    89,612.69x = 123,660.80 × 49,318.75
  4. Step 4: Simplify right side
    89,612.69x = 6,098,796,080
  5. Step 5: Solve for x
    x = 6,098,796,080/89,612.69
  6. Step 6: Final answer
    x = 68,057.28

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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.