Home / 90,026.61-135,046.49-30,861.78

Finding the Fourth Proportional to 90,026.61, 135,046.49 and 30,861.78

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Solution

The fourth proportional to 90,026.61, 135,046.49 and 30,861.78 is: 46,294.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,026.61 : 135,046.49 = 30,861.78 : x
  2. Step 2: Convert to fraction form
    90,026.61/135,046.49 = 30,861.78/x
  3. Step 3: Cross multiply
    90,026.61x = 135,046.49 × 30,861.78
  4. Step 4: Simplify right side
    90,026.61x = 4,167,774,909.84
  5. Step 5: Solve for x
    x = 4,167,774,909.84/90,026.61
  6. Step 6: Final answer
    x = 46,294.92

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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.