Home / 66,061.12-99,102.02-21,677.78

Finding the Fourth Proportional to 66,061.12, 99,102.02 and 21,677.78

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Solution

The fourth proportional to 66,061.12, 99,102.02 and 21,677.78 is: 32,520.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,061.12 : 99,102.02 = 21,677.78 : x
  2. Step 2: Convert to fraction form
    66,061.12/99,102.02 = 21,677.78/x
  3. Step 3: Cross multiply
    66,061.12x = 99,102.02 × 21,677.78
  4. Step 4: Simplify right side
    66,061.12x = 2,148,311,369.03
  5. Step 5: Solve for x
    x = 2,148,311,369.03/66,061.12
  6. Step 6: Final answer
    x = 32,520.06

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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.