Home / 90,099.12-124,339.38-49,815.48

Finding the Fourth Proportional to 90,099.12, 124,339.38 and 49,815.48

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Solution

The fourth proportional to 90,099.12, 124,339.38 and 49,815.48 is: 68,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,099.12 : 124,339.38 = 49,815.48 : x
  2. Step 2: Convert to fraction form
    90,099.12/124,339.38 = 49,815.48/x
  3. Step 3: Cross multiply
    90,099.12x = 124,339.38 × 49,815.48
  4. Step 4: Simplify right side
    90,099.12x = 6,194,025,897.60
  5. Step 5: Solve for x
    x = 6,194,025,897.60/90,099.12
  6. Step 6: Final answer
    x = 68,746.80

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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.