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Finding the Fourth Proportional to 90,240.57, 124,531.11 and 49,955.49

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Solution

The fourth proportional to 90,240.57, 124,531.11 and 49,955.49 is: 68,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,240.57 : 124,531.11 = 49,955.49 : x
  2. Step 2: Convert to fraction form
    90,240.57/124,531.11 = 49,955.49/x
  3. Step 3: Cross multiply
    90,240.57x = 124,531.11 × 49,955.49
  4. Step 4: Simplify right side
    90,240.57x = 6,221,012,620.29
  5. Step 5: Solve for x
    x = 6,221,012,620.29/90,240.57
  6. Step 6: Final answer
    x = 68,938.09

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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.