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Finding the Fourth Proportional to 99,479.27, 149,019.03 and 49,407.90

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Solution

The fourth proportional to 99,479.27, 149,019.03 and 49,407.90 is: 74,012.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,479.27 : 149,019.03 = 49,407.90 : x
  2. Step 2: Convert to fraction form
    99,479.27/149,019.03 = 49,407.90/x
  3. Step 3: Cross multiply
    99,479.27x = 149,019.03 × 49,407.90
  4. Step 4: Simplify right side
    99,479.27x = 7,362,717,332.34
  5. Step 5: Solve for x
    x = 7,362,717,332.34/99,479.27
  6. Step 6: Final answer
    x = 74,012.58

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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.