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Finding the Fourth Proportional to 90,084.75, 135,127.13 and 24,420.75

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Solution

The fourth proportional to 90,084.75, 135,127.13 and 24,420.75 is: 36,631.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,084.75 : 135,127.13 = 24,420.75 : x
  2. Step 2: Convert to fraction form
    90,084.75/135,127.13 = 24,420.75/x
  3. Step 3: Cross multiply
    90,084.75x = 135,127.13 × 24,420.75
  4. Step 4: Simplify right side
    90,084.75x = 3,299,905,737.84
  5. Step 5: Solve for x
    x = 3,299,905,737.84/90,084.75
  6. Step 6: Final answer
    x = 36,631.13

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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.