Home / 90,115.20-124,362.24-49,830.72

Finding the Fourth Proportional to 90,115.20, 124,362.24 and 49,830.72

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Solution

The fourth proportional to 90,115.20, 124,362.24 and 49,830.72 is: 68,768.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,115.20 : 124,362.24 = 49,830.72 : x
  2. Step 2: Convert to fraction form
    90,115.20/124,362.24 = 49,830.72/x
  3. Step 3: Cross multiply
    90,115.20x = 124,362.24 × 49,830.72
  4. Step 4: Simplify right side
    90,115.20x = 6,197,059,960.01
  5. Step 5: Solve for x
    x = 6,197,059,960.01/90,115.20
  6. Step 6: Final answer
    x = 68,768.20

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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.