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Finding the Fourth Proportional to 99,472.98, 149,211.02 and 55,379.98

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Solution

The fourth proportional to 99,472.98, 149,211.02 and 55,379.98 is: 83,070.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,472.98 : 149,211.02 = 55,379.98 : x
  2. Step 2: Convert to fraction form
    99,472.98/149,211.02 = 55,379.98/x
  3. Step 3: Cross multiply
    99,472.98x = 149,211.02 × 55,379.98
  4. Step 4: Simplify right side
    99,472.98x = 8,263,303,303.38
  5. Step 5: Solve for x
    x = 8,263,303,303.38/99,472.98
  6. Step 6: Final answer
    x = 83,070.83

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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.