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Finding the Fourth Proportional to 99,777.78, 149,587.65 and 49,830.39

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Solution

The fourth proportional to 99,777.78, 149,587.65 and 49,830.39 is: 74,706.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,777.78 : 149,587.65 = 49,830.39 : x
  2. Step 2: Convert to fraction form
    99,777.78/149,587.65 = 49,830.39/x
  3. Step 3: Cross multiply
    99,777.78x = 149,587.65 × 49,830.39
  4. Step 4: Simplify right side
    99,777.78x = 7,454,010,938.68
  5. Step 5: Solve for x
    x = 7,454,010,938.68/99,777.78
  6. Step 6: Final answer
    x = 74,706.12

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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.