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Finding the Fourth Proportional to 70,745.82, 97,627.16 and 38,914.70

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Solution

The fourth proportional to 70,745.82, 97,627.16 and 38,914.70 is: 53,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,745.82 : 97,627.16 = 38,914.70 : x
  2. Step 2: Convert to fraction form
    70,745.82/97,627.16 = 38,914.70/x
  3. Step 3: Cross multiply
    70,745.82x = 97,627.16 × 38,914.70
  4. Step 4: Simplify right side
    70,745.82x = 3,799,131,643.25
  5. Step 5: Solve for x
    x = 3,799,131,643.25/70,745.82
  6. Step 6: Final answer
    x = 53,701.15

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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.