Home / 70,972.08-97,939.17-39,140.70

Finding the Fourth Proportional to 70,972.08, 97,939.17 and 39,140.70

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Solution

The fourth proportional to 70,972.08, 97,939.17 and 39,140.70 is: 54,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,972.08 : 97,939.17 = 39,140.70 : x
  2. Step 2: Convert to fraction form
    70,972.08/97,939.17 = 39,140.70/x
  3. Step 3: Cross multiply
    70,972.08x = 97,939.17 × 39,140.70
  4. Step 4: Simplify right side
    70,972.08x = 3,833,407,671.22
  5. Step 5: Solve for x
    x = 3,833,407,671.22/70,972.08
  6. Step 6: Final answer
    x = 54,012.90

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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.