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Finding the Fourth Proportional to 99,476, 149,255.76 and 40,353.92

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Solution

The fourth proportional to 99,476, 149,255.76 and 40,353.92 is: 60,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,476 : 149,255.76 = 40,353.92 : x
  2. Step 2: Convert to fraction form
    99,476/149,255.76 = 40,353.92/x
  3. Step 3: Cross multiply
    99,476x = 149,255.76 × 40,353.92
  4. Step 4: Simplify right side
    99,476x = 6,023,054,998.58
  5. Step 5: Solve for x
    x = 6,023,054,998.58/99,476
  6. Step 6: Final answer
    x = 60,547.82

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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.