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Finding the Fourth Proportional to 100,586.74, 138,751.95 and 62,795.38

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Solution

The fourth proportional to 100,586.74, 138,751.95 and 62,795.38 is: 86,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,586.74 : 138,751.95 = 62,795.38 : x
  2. Step 2: Convert to fraction form
    100,586.74/138,751.95 = 62,795.38/x
  3. Step 3: Cross multiply
    100,586.74x = 138,751.95 × 62,795.38
  4. Step 4: Simplify right side
    100,586.74x = 8,712,981,425.99
  5. Step 5: Solve for x
    x = 8,712,981,425.99/100,586.74
  6. Step 6: Final answer
    x = 86,621.57

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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.