Home / 66,142.50-99,228.12-21,773.76

Finding the Fourth Proportional to 66,142.50, 99,228.12 and 21,773.76

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Solution

The fourth proportional to 66,142.50, 99,228.12 and 21,773.76 is: 32,665.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,142.50 : 99,228.12 = 21,773.76 : x
  2. Step 2: Convert to fraction form
    66,142.50/99,228.12 = 21,773.76/x
  3. Step 3: Cross multiply
    66,142.50x = 99,228.12 × 21,773.76
  4. Step 4: Simplify right side
    66,142.50x = 2,160,569,270.13
  5. Step 5: Solve for x
    x = 2,160,569,270.13/66,142.50
  6. Step 6: Final answer
    x = 32,665.37

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1.5x scale

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.