Home / 90,162.28-124,421.70-49,878.28

Finding the Fourth Proportional to 90,162.28, 124,421.70 and 49,878.28

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Solution

The fourth proportional to 90,162.28, 124,421.70 and 49,878.28 is: 68,830.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,162.28 : 124,421.70 = 49,878.28 : x
  2. Step 2: Convert to fraction form
    90,162.28/124,421.70 = 49,878.28/x
  3. Step 3: Cross multiply
    90,162.28x = 124,421.70 × 49,878.28
  4. Step 4: Simplify right side
    90,162.28x = 6,205,940,390.68
  5. Step 5: Solve for x
    x = 6,205,940,390.68/90,162.28
  6. Step 6: Final answer
    x = 68,830.78

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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.