Home / 89,720.40-123,812.52-49,437.88

Finding the Fourth Proportional to 89,720.40, 123,812.52 and 49,437.88

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Solution

The fourth proportional to 89,720.40, 123,812.52 and 49,437.88 is: 68,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,720.40 : 123,812.52 = 49,437.88 : x
  2. Step 2: Convert to fraction form
    89,720.40/123,812.52 = 49,437.88/x
  3. Step 3: Cross multiply
    89,720.40x = 123,812.52 × 49,437.88
  4. Step 4: Simplify right side
    89,720.40x = 6,121,028,506.26
  5. Step 5: Solve for x
    x = 6,121,028,506.26/89,720.40
  6. Step 6: Final answer
    x = 68,223.38

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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.