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Finding the Fourth Proportional to 69,438.76, 95,818.64 and 38,806.20

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Solution

The fourth proportional to 69,438.76, 95,818.64 and 38,806.20 is: 53,548.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,438.76 : 95,818.64 = 38,806.20 : x
  2. Step 2: Convert to fraction form
    69,438.76/95,818.64 = 38,806.20/x
  3. Step 3: Cross multiply
    69,438.76x = 95,818.64 × 38,806.20
  4. Step 4: Simplify right side
    69,438.76x = 3,718,357,307.57
  5. Step 5: Solve for x
    x = 3,718,357,307.57/69,438.76
  6. Step 6: Final answer
    x = 53,548.73

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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.