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Finding the Fourth Proportional to 74,892, 112,288.08 and 30,506.88

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Solution

The fourth proportional to 74,892, 112,288.08 and 30,506.88 is: 45,739.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,892 : 112,288.08 = 30,506.88 : x
  2. Step 2: Convert to fraction form
    74,892/112,288.08 = 30,506.88/x
  3. Step 3: Cross multiply
    74,892x = 112,288.08 × 30,506.88
  4. Step 4: Simplify right side
    74,892x = 3,425,558,981.99
  5. Step 5: Solve for x
    x = 3,425,558,981.99/74,892
  6. Step 6: Final answer
    x = 45,739.99

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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.