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Finding the Fourth Proportional to 90,046.80, 135,070.20 and 23,486.76

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Solution

The fourth proportional to 90,046.80, 135,070.20 and 23,486.76 is: 35,230.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,046.80 : 135,070.20 = 23,486.76 : x
  2. Step 2: Convert to fraction form
    90,046.80/135,070.20 = 23,486.76/x
  3. Step 3: Cross multiply
    90,046.80x = 135,070.20 × 23,486.76
  4. Step 4: Simplify right side
    90,046.80x = 3,172,361,370.55
  5. Step 5: Solve for x
    x = 3,172,361,370.55/90,046.80
  6. Step 6: Final answer
    x = 35,230.14

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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.