Home / 90,012.72-124,217.76-49,725.60

Finding the Fourth Proportional to 90,012.72, 124,217.76 and 49,725.60

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Solution

The fourth proportional to 90,012.72, 124,217.76 and 49,725.60 is: 68,621.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,012.72 : 124,217.76 = 49,725.60 : x
  2. Step 2: Convert to fraction form
    90,012.72/124,217.76 = 49,725.60/x
  3. Step 3: Cross multiply
    90,012.72x = 124,217.76 × 49,725.60
  4. Step 4: Simplify right side
    90,012.72x = 6,176,802,646.66
  5. Step 5: Solve for x
    x = 6,176,802,646.66/90,012.72
  6. Step 6: Final answer
    x = 68,621.44

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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.