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Finding the Fourth Proportional to 70,729.13, 97,603.97 and 38,897.93

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Solution

The fourth proportional to 70,729.13, 97,603.97 and 38,897.93 is: 53,677.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,729.13 : 97,603.97 = 38,897.93 : x
  2. Step 2: Convert to fraction form
    70,729.13/97,603.97 = 38,897.93/x
  3. Step 3: Cross multiply
    70,729.13x = 97,603.97 × 38,897.93
  4. Step 4: Simplify right side
    70,729.13x = 3,796,592,198.29
  5. Step 5: Solve for x
    x = 3,796,592,198.29/70,729.13
  6. Step 6: Final answer
    x = 53,677.91

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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.