Home / 66,315.17-99,471.85-28,874.45

Finding the Fourth Proportional to 66,315.17, 99,471.85 and 28,874.45

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Solution

The fourth proportional to 66,315.17, 99,471.85 and 28,874.45 is: 43,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.17 : 99,471.85 = 28,874.45 : x
  2. Step 2: Convert to fraction form
    66,315.17/99,471.85 = 28,874.45/x
  3. Step 3: Cross multiply
    66,315.17x = 99,471.85 × 28,874.45
  4. Step 4: Simplify right side
    66,315.17x = 2,872,195,135.73
  5. Step 5: Solve for x
    x = 2,872,195,135.73/66,315.17
  6. Step 6: Final answer
    x = 43,311.28

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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.