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Finding the Fourth Proportional to 112,747.50, 155,596.50 and 62,446.50

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Solution

The fourth proportional to 112,747.50, 155,596.50 and 62,446.50 is: 86,178.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,747.50 : 155,596.50 = 62,446.50 : x
  2. Step 2: Convert to fraction form
    112,747.50/155,596.50 = 62,446.50/x
  3. Step 3: Cross multiply
    112,747.50x = 155,596.50 × 62,446.50
  4. Step 4: Simplify right side
    112,747.50x = 9,716,456,837.25
  5. Step 5: Solve for x
    x = 9,716,456,837.25/112,747.50
  6. Step 6: Final answer
    x = 86,178.91

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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.