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Finding the Fourth Proportional to 81,108.61, 121,674.49 and 24,953.40

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Solution

The fourth proportional to 81,108.61, 121,674.49 and 24,953.40 is: 37,433.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108.61 : 121,674.49 = 24,953.40 : x
  2. Step 2: Convert to fraction form
    81,108.61/121,674.49 = 24,953.40/x
  3. Step 3: Cross multiply
    81,108.61x = 121,674.49 × 24,953.40
  4. Step 4: Simplify right side
    81,108.61x = 3,036,192,156.38
  5. Step 5: Solve for x
    x = 3,036,192,156.38/81,108.61
  6. Step 6: Final answer
    x = 37,433.66

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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.