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Finding the Fourth Proportional to 69,221.56, 103,832.34 and 39,618.76

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Solution

The fourth proportional to 69,221.56, 103,832.34 and 39,618.76 is: 59,428.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,221.56 : 103,832.34 = 39,618.76 : x
  2. Step 2: Convert to fraction form
    69,221.56/103,832.34 = 39,618.76/x
  3. Step 3: Cross multiply
    69,221.56x = 103,832.34 × 39,618.76
  4. Step 4: Simplify right side
    69,221.56x = 4,113,708,558.70
  5. Step 5: Solve for x
    x = 4,113,708,558.70/69,221.56
  6. Step 6: Final answer
    x = 59,428.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.