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Finding the Fourth Proportional to 81,108.91, 121,653.78 and 24,948.91

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Solution

The fourth proportional to 81,108.91, 121,653.78 and 24,948.91 is: 37,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,108.91 : 121,653.78 = 24,948.91 : x
  2. Step 2: Convert to fraction form
    81,108.91/121,653.78 = 24,948.91/x
  3. Step 3: Cross multiply
    81,108.91x = 121,653.78 × 24,948.91
  4. Step 4: Simplify right side
    81,108.91x = 3,035,129,208.38
  5. Step 5: Solve for x
    x = 3,035,129,208.38/81,108.91
  6. Step 6: Final answer
    x = 37,420.42

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1.5x scale

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.