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Finding the Fourth Proportional to 75,211.68, 103,792.40 and 43,380.70

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Solution

The fourth proportional to 75,211.68, 103,792.40 and 43,380.70 is: 59,865.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,211.68 : 103,792.40 = 43,380.70 : x
  2. Step 2: Convert to fraction form
    75,211.68/103,792.40 = 43,380.70/x
  3. Step 3: Cross multiply
    75,211.68x = 103,792.40 × 43,380.70
  4. Step 4: Simplify right side
    75,211.68x = 4,502,586,966.68
  5. Step 5: Solve for x
    x = 4,502,586,966.68/75,211.68
  6. Step 6: Final answer
    x = 59,865.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.