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Finding the Fourth Proportional to 70,039.89, 96,655.28 and 38,209.46

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Solution

The fourth proportional to 70,039.89, 96,655.28 and 38,209.46 is: 52,729.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,039.89 : 96,655.28 = 38,209.46 : x
  2. Step 2: Convert to fraction form
    70,039.89/96,655.28 = 38,209.46/x
  3. Step 3: Cross multiply
    70,039.89x = 96,655.28 × 38,209.46
  4. Step 4: Simplify right side
    70,039.89x = 3,693,145,380.63
  5. Step 5: Solve for x
    x = 3,693,145,380.63/70,039.89
  6. Step 6: Final answer
    x = 52,729.17

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