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Finding the Fourth Proportional to 90,812.60, 136,218.90 and 41,660.60

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Solution

The fourth proportional to 90,812.60, 136,218.90 and 41,660.60 is: 62,490.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.60 : 136,218.90 = 41,660.60 : x
  2. Step 2: Convert to fraction form
    90,812.60/136,218.90 = 41,660.60/x
  3. Step 3: Cross multiply
    90,812.60x = 136,218.90 × 41,660.60
  4. Step 4: Simplify right side
    90,812.60x = 5,674,961,105.34
  5. Step 5: Solve for x
    x = 5,674,961,105.34/90,812.60
  6. Step 6: Final answer
    x = 62,490.90

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1.5x scale

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.