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Finding the Fourth Proportional to 70,787.67, 97,687.01 and 38,955.89

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Solution

The fourth proportional to 70,787.67, 97,687.01 and 38,955.89 is: 53,759.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,787.67 : 97,687.01 = 38,955.89 : x
  2. Step 2: Convert to fraction form
    70,787.67/97,687.01 = 38,955.89/x
  3. Step 3: Cross multiply
    70,787.67x = 97,687.01 × 38,955.89
  4. Step 4: Simplify right side
    70,787.67x = 3,805,484,208.11
  5. Step 5: Solve for x
    x = 3,805,484,208.11/70,787.67
  6. Step 6: Final answer
    x = 53,759.14

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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.