Home / 89,823.12-134,729.28-26,640.72

Finding the Fourth Proportional to 89,823.12, 134,729.28 and 26,640.72

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Solution

The fourth proportional to 89,823.12, 134,729.28 and 26,640.72 is: 39,959.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,823.12 : 134,729.28 = 26,640.72 : x
  2. Step 2: Convert to fraction form
    89,823.12/134,729.28 = 26,640.72/x
  3. Step 3: Cross multiply
    89,823.12x = 134,729.28 × 26,640.72
  4. Step 4: Simplify right side
    89,823.12x = 3,589,285,024.28
  5. Step 5: Solve for x
    x = 3,589,285,024.28/89,823.12
  6. Step 6: Final answer
    x = 39,959.48

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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.