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Finding the Fourth Proportional to 90,445.84, 135,669.90 and 34,270.84

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Solution

The fourth proportional to 90,445.84, 135,669.90 and 34,270.84 is: 51,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,445.84 : 135,669.90 = 34,270.84 : x
  2. Step 2: Convert to fraction form
    90,445.84/135,669.90 = 34,270.84/x
  3. Step 3: Cross multiply
    90,445.84x = 135,669.90 × 34,270.84
  4. Step 4: Simplify right side
    90,445.84x = 4,649,521,435.72
  5. Step 5: Solve for x
    x = 4,649,521,435.72/90,445.84
  6. Step 6: Final answer
    x = 51,406.69

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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.