Home / 65,521.20-98,257.80-21,159.60

Finding the Fourth Proportional to 65,521.20, 98,257.80 and 21,159.60

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Solution

The fourth proportional to 65,521.20, 98,257.80 and 21,159.60 is: 31,731.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,521.20 : 98,257.80 = 21,159.60 : x
  2. Step 2: Convert to fraction form
    65,521.20/98,257.80 = 21,159.60/x
  3. Step 3: Cross multiply
    65,521.20x = 98,257.80 × 21,159.60
  4. Step 4: Simplify right side
    65,521.20x = 2,079,095,744.88
  5. Step 5: Solve for x
    x = 2,079,095,744.88/65,521.20
  6. Step 6: Final answer
    x = 31,731.65

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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.