Home / 66,104.13-99,135.13-21,720.58

Finding the Fourth Proportional to 66,104.13, 99,135.13 and 21,720.58

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Solution

The fourth proportional to 66,104.13, 99,135.13 and 21,720.58 is: 32,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,104.13 : 99,135.13 = 21,720.58 : x
  2. Step 2: Convert to fraction form
    66,104.13/99,135.13 = 21,720.58/x
  3. Step 3: Cross multiply
    66,104.13x = 99,135.13 × 21,720.58
  4. Step 4: Simplify right side
    66,104.13x = 2,153,272,521.98
  5. Step 5: Solve for x
    x = 2,153,272,521.98/66,104.13
  6. Step 6: Final answer
    x = 32,573.95

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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.