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Finding the Fourth Proportional to 70,974.47, 97,944.72 and 39,143.39

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Solution

The fourth proportional to 70,974.47, 97,944.72 and 39,143.39 is: 54,017.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,974.47 : 97,944.72 = 39,143.39 : x
  2. Step 2: Convert to fraction form
    70,974.47/97,944.72 = 39,143.39/x
  3. Step 3: Cross multiply
    70,974.47x = 97,944.72 × 39,143.39
  4. Step 4: Simplify right side
    70,974.47x = 3,833,887,883.68
  5. Step 5: Solve for x
    x = 3,833,887,883.68/70,974.47
  6. Step 6: Final answer
    x = 54,017.85

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1.5x scale

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.