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Finding the Fourth Proportional to 90,996.60, 136,494.90 and 51,630.60

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Solution

The fourth proportional to 90,996.60, 136,494.90 and 51,630.60 is: 77,445.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,996.60 : 136,494.90 = 51,630.60 : x
  2. Step 2: Convert to fraction form
    90,996.60/136,494.90 = 51,630.60/x
  3. Step 3: Cross multiply
    90,996.60x = 136,494.90 × 51,630.60
  4. Step 4: Simplify right side
    90,996.60x = 7,047,313,583.94
  5. Step 5: Solve for x
    x = 7,047,313,583.94/90,996.60
  6. Step 6: Final answer
    x = 77,445.90

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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.