Home / 90,861.78-136,320.60-46,519.66

Finding the Fourth Proportional to 90,861.78, 136,320.60 and 46,519.66

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Solution

The fourth proportional to 90,861.78, 136,320.60 and 46,519.66 is: 69,793.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,861.78 : 136,320.60 = 46,519.66 : x
  2. Step 2: Convert to fraction form
    90,861.78/136,320.60 = 46,519.66/x
  3. Step 3: Cross multiply
    90,861.78x = 136,320.60 × 46,519.66
  4. Step 4: Simplify right side
    90,861.78x = 6,341,587,963.00
  5. Step 5: Solve for x
    x = 6,341,587,963.00/90,861.78
  6. Step 6: Final answer
    x = 69,793.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.