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Finding the Fourth Proportional to 65,551.20, 98,340.48 and 21,180.48

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Solution

The fourth proportional to 65,551.20, 98,340.48 and 21,180.48 is: 31,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,551.20 : 98,340.48 = 21,180.48 : x
  2. Step 2: Convert to fraction form
    65,551.20/98,340.48 = 21,180.48/x
  3. Step 3: Cross multiply
    65,551.20x = 98,340.48 × 21,180.48
  4. Step 4: Simplify right side
    65,551.20x = 2,082,898,569.83
  5. Step 5: Solve for x
    x = 2,082,898,569.83/65,551.20
  6. Step 6: Final answer
    x = 31,775.14

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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.