Home / 81,184.98-121,792.59-28,627.86

Finding the Fourth Proportional to 81,184.98, 121,792.59 and 28,627.86

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Solution

The fourth proportional to 81,184.98, 121,792.59 and 28,627.86 is: 42,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,184.98 : 121,792.59 = 28,627.86 : x
  2. Step 2: Convert to fraction form
    81,184.98/121,792.59 = 28,627.86/x
  3. Step 3: Cross multiply
    81,184.98x = 121,792.59 × 28,627.86
  4. Step 4: Simplify right side
    81,184.98x = 3,486,661,215.56
  5. Step 5: Solve for x
    x = 3,486,661,215.56/81,184.98
  6. Step 6: Final answer
    x = 42,947.12

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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.