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Finding the Fourth Proportional to 90,415.98, 135,612.36 and 23,861.12

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Solution

The fourth proportional to 90,415.98, 135,612.36 and 23,861.12 is: 35,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,415.98 : 135,612.36 = 23,861.12 : x
  2. Step 2: Convert to fraction form
    90,415.98/135,612.36 = 23,861.12/x
  3. Step 3: Cross multiply
    90,415.98x = 135,612.36 × 23,861.12
  4. Step 4: Simplify right side
    90,415.98x = 3,235,862,117.38
  5. Step 5: Solve for x
    x = 3,235,862,117.38/90,415.98
  6. Step 6: Final answer
    x = 35,788.61

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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.