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Finding the Fourth Proportional to 70,470, 97,239.69 and 38,630.52

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Solution

The fourth proportional to 70,470, 97,239.69 and 38,630.52 is: 53,305.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,470 : 97,239.69 = 38,630.52 : x
  2. Step 2: Convert to fraction form
    70,470/97,239.69 = 38,630.52/x
  3. Step 3: Cross multiply
    70,470x = 97,239.69 × 38,630.52
  4. Step 4: Simplify right side
    70,470x = 3,756,419,789.34
  5. Step 5: Solve for x
    x = 3,756,419,789.34/70,470
  6. Step 6: Final answer
    x = 53,305.23

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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.