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Finding the Fourth Proportional to 81,655.72, 122,483.58 and 22,491.98

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Solution

The fourth proportional to 81,655.72, 122,483.58 and 22,491.98 is: 33,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,655.72 : 122,483.58 = 22,491.98 : x
  2. Step 2: Convert to fraction form
    81,655.72/122,483.58 = 22,491.98/x
  3. Step 3: Cross multiply
    81,655.72x = 122,483.58 × 22,491.98
  4. Step 4: Simplify right side
    81,655.72x = 2,754,898,231.69
  5. Step 5: Solve for x
    x = 2,754,898,231.69/81,655.72
  6. Step 6: Final answer
    x = 33,737.97

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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.