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Finding the Fourth Proportional to 72,576.88, 100,166.43 and 40,747.93

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Solution

The fourth proportional to 72,576.88, 100,166.43 and 40,747.93 is: 56,237.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,576.88 : 100,166.43 = 40,747.93 : x
  2. Step 2: Convert to fraction form
    72,576.88/100,166.43 = 40,747.93/x
  3. Step 3: Cross multiply
    72,576.88x = 100,166.43 × 40,747.93
  4. Step 4: Simplify right side
    72,576.88x = 4,081,574,677.99
  5. Step 5: Solve for x
    x = 4,081,574,677.99/72,576.88
  6. Step 6: Final answer
    x = 56,237.95

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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.