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Finding the Fourth Proportional to 70,951.07, 97,910.64 and 38,686.29

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Solution

The fourth proportional to 70,951.07, 97,910.64 and 38,686.29 is: 53,386.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.07 : 97,910.64 = 38,686.29 : x
  2. Step 2: Convert to fraction form
    70,951.07/97,910.64 = 38,686.29/x
  3. Step 3: Cross multiply
    70,951.07x = 97,910.64 × 38,686.29
  4. Step 4: Simplify right side
    70,951.07x = 3,787,799,413.13
  5. Step 5: Solve for x
    x = 3,787,799,413.13/70,951.07
  6. Step 6: Final answer
    x = 53,386.08

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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.