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Finding the Fourth Proportional to 117,764.72, 162,545.09 and 66,807.82

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Solution

The fourth proportional to 117,764.72, 162,545.09 and 66,807.82 is: 92,211.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,764.72 : 162,545.09 = 66,807.82 : x
  2. Step 2: Convert to fraction form
    117,764.72/162,545.09 = 66,807.82/x
  3. Step 3: Cross multiply
    117,764.72x = 162,545.09 × 66,807.82
  4. Step 4: Simplify right side
    117,764.72x = 10,859,282,374.20
  5. Step 5: Solve for x
    x = 10,859,282,374.20/117,764.72
  6. Step 6: Final answer
    x = 92,211.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.