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Finding the Fourth Proportional to 98,608.82, 147,806.64 and 39,379.40

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Solution

The fourth proportional to 98,608.82, 147,806.64 and 39,379.40 is: 59,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,608.82 : 147,806.64 = 39,379.40 : x
  2. Step 2: Convert to fraction form
    98,608.82/147,806.64 = 39,379.40/x
  3. Step 3: Cross multiply
    98,608.82x = 147,806.64 × 39,379.40
  4. Step 4: Simplify right side
    98,608.82x = 5,820,536,799.22
  5. Step 5: Solve for x
    x = 5,820,536,799.22/98,608.82
  6. Step 6: Final answer
    x = 59,026.53

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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.