Home / 90,856.88-136,290.78-28,527.38

Finding the Fourth Proportional to 90,856.88, 136,290.78 and 28,527.38

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Solution

The fourth proportional to 90,856.88, 136,290.78 and 28,527.38 is: 42,792.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,856.88 : 136,290.78 = 28,527.38 : x
  2. Step 2: Convert to fraction form
    90,856.88/136,290.78 = 28,527.38/x
  3. Step 3: Cross multiply
    90,856.88x = 136,290.78 × 28,527.38
  4. Step 4: Simplify right side
    90,856.88x = 3,888,018,190.10
  5. Step 5: Solve for x
    x = 3,888,018,190.10/90,856.88
  6. Step 6: Final answer
    x = 42,792.78

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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.