Home / 90,012.52-124,224.54-49,729.80

Finding the Fourth Proportional to 90,012.52, 124,224.54 and 49,729.80

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Solution

The fourth proportional to 90,012.52, 124,224.54 and 49,729.80 is: 68,631.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,012.52 : 124,224.54 = 49,729.80 : x
  2. Step 2: Convert to fraction form
    90,012.52/124,224.54 = 49,729.80/x
  3. Step 3: Cross multiply
    90,012.52x = 124,224.54 × 49,729.80
  4. Step 4: Simplify right side
    90,012.52x = 6,177,661,529.29
  5. Step 5: Solve for x
    x = 6,177,661,529.29/90,012.52
  6. Step 6: Final answer
    x = 68,631.14

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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.