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Finding the Fourth Proportional to 70,450.52, 97,221.80 and 38,620.56

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Solution

The fourth proportional to 70,450.52, 97,221.80 and 38,620.56 is: 53,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,450.52 : 97,221.80 = 38,620.56 : x
  2. Step 2: Convert to fraction form
    70,450.52/97,221.80 = 38,620.56/x
  3. Step 3: Cross multiply
    70,450.52x = 97,221.80 × 38,620.56
  4. Step 4: Simplify right side
    70,450.52x = 3,754,760,360.21
  5. Step 5: Solve for x
    x = 3,754,760,360.21/70,450.52
  6. Step 6: Final answer
    x = 53,296.42

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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.