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Finding the Fourth Proportional to 70,754.76, 97,640.87 and 38,923.70

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Solution

The fourth proportional to 70,754.76, 97,640.87 and 38,923.70 is: 53,714.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,754.76 : 97,640.87 = 38,923.70 : x
  2. Step 2: Convert to fraction form
    70,754.76/97,640.87 = 38,923.70/x
  3. Step 3: Cross multiply
    70,754.76x = 97,640.87 × 38,923.70
  4. Step 4: Simplify right side
    70,754.76x = 3,800,543,248.80
  5. Step 5: Solve for x
    x = 3,800,543,248.80/70,754.76
  6. Step 6: Final answer
    x = 53,714.31

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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.