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Finding the Fourth Proportional to 90,651.83, 125,096.81 and 49,816.08

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Solution

The fourth proportional to 90,651.83, 125,096.81 and 49,816.08 is: 68,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,651.83 : 125,096.81 = 49,816.08 : x
  2. Step 2: Convert to fraction form
    90,651.83/125,096.81 = 49,816.08/x
  3. Step 3: Cross multiply
    90,651.83x = 125,096.81 × 49,816.08
  4. Step 4: Simplify right side
    90,651.83x = 6,231,832,445.62
  5. Step 5: Solve for x
    x = 6,231,832,445.62/90,651.83
  6. Step 6: Final answer
    x = 68,744.70

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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.