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Finding the Fourth Proportional to 70,510.74, 97,304.29 and 38,679.42

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Solution

The fourth proportional to 70,510.74, 97,304.29 and 38,679.42 is: 53,377.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,510.74 : 97,304.29 = 38,679.42 : x
  2. Step 2: Convert to fraction form
    70,510.74/97,304.29 = 38,679.42/x
  3. Step 3: Cross multiply
    70,510.74x = 97,304.29 × 38,679.42
  4. Step 4: Simplify right side
    70,510.74x = 3,763,673,768.90
  5. Step 5: Solve for x
    x = 3,763,673,768.90/70,510.74
  6. Step 6: Final answer
    x = 53,377.31

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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.