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Finding the Fourth Proportional to 102,759.01, 154,153.19 and 31,687.65

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Solution

The fourth proportional to 102,759.01, 154,153.19 and 31,687.65 is: 47,536.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,759.01 : 154,153.19 = 31,687.65 : x
  2. Step 2: Convert to fraction form
    102,759.01/154,153.19 = 31,687.65/x
  3. Step 3: Cross multiply
    102,759.01x = 154,153.19 × 31,687.65
  4. Step 4: Simplify right side
    102,759.01x = 4,884,752,331.10
  5. Step 5: Solve for x
    x = 4,884,752,331.10/102,759.01
  6. Step 6: Final answer
    x = 47,536.00

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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.