Home / 66,565.20-99,862.20-19,822.80

Finding the Fourth Proportional to 66,565.20, 99,862.20 and 19,822.80

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Solution

The fourth proportional to 66,565.20, 99,862.20 and 19,822.80 is: 29,738.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,565.20 : 99,862.20 = 19,822.80 : x
  2. Step 2: Convert to fraction form
    66,565.20/99,862.20 = 19,822.80/x
  3. Step 3: Cross multiply
    66,565.20x = 99,862.20 × 19,822.80
  4. Step 4: Simplify right side
    66,565.20x = 1,979,548,418.16
  5. Step 5: Solve for x
    x = 1,979,548,418.16/66,565.20
  6. Step 6: Final answer
    x = 29,738.49

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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.