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Finding the Fourth Proportional to 98,511.84, 147,789.84 and 39,375.36

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Solution

The fourth proportional to 98,511.84, 147,789.84 and 39,375.36 is: 59,071.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,511.84 : 147,789.84 = 39,375.36 : x
  2. Step 2: Convert to fraction form
    98,511.84/147,789.84 = 39,375.36/x
  3. Step 3: Cross multiply
    98,511.84x = 147,789.84 × 39,375.36
  4. Step 4: Simplify right side
    98,511.84x = 5,819,278,154.34
  5. Step 5: Solve for x
    x = 5,819,278,154.34/98,511.84
  6. Step 6: Final answer
    x = 59,071.87

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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.