Home / 65,619.78-98,445.35-21,246.58

Finding the Fourth Proportional to 65,619.78, 98,445.35 and 21,246.58

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Solution

The fourth proportional to 65,619.78, 98,445.35 and 21,246.58 is: 31,874.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,619.78 : 98,445.35 = 21,246.58 : x
  2. Step 2: Convert to fraction form
    65,619.78/98,445.35 = 21,246.58/x
  3. Step 3: Cross multiply
    65,619.78x = 98,445.35 × 21,246.58
  4. Step 4: Simplify right side
    65,619.78x = 2,091,627,100.90
  5. Step 5: Solve for x
    x = 2,091,627,100.90/65,619.78
  6. Step 6: Final answer
    x = 31,874.95

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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.