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Finding the Fourth Proportional to 70,545.61, 105,818.11 and 25,556.43

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Solution

The fourth proportional to 70,545.61, 105,818.11 and 25,556.43 is: 38,334.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,545.61 : 105,818.11 = 25,556.43 : x
  2. Step 2: Convert to fraction form
    70,545.61/105,818.11 = 25,556.43/x
  3. Step 3: Cross multiply
    70,545.61x = 105,818.11 × 25,556.43
  4. Step 4: Simplify right side
    70,545.61x = 2,704,333,120.95
  5. Step 5: Solve for x
    x = 2,704,333,120.95/70,545.61
  6. Step 6: Final answer
    x = 38,334.53

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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.