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Finding the Fourth Proportional to 94,172, 129,957.36 and 51,731.24

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Solution

The fourth proportional to 94,172, 129,957.36 and 51,731.24 is: 71,389.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,172 : 129,957.36 = 51,731.24 : x
  2. Step 2: Convert to fraction form
    94,172/129,957.36 = 51,731.24/x
  3. Step 3: Cross multiply
    94,172x = 129,957.36 × 51,731.24
  4. Step 4: Simplify right side
    94,172x = 6,722,855,379.93
  5. Step 5: Solve for x
    x = 6,722,855,379.93/94,172
  6. Step 6: Final answer
    x = 71,389.11

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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.