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Finding the Fourth Proportional to 74,732.67, 112,105.44 and 21,424.86

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Solution

The fourth proportional to 74,732.67, 112,105.44 and 21,424.86 is: 32,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,732.67 : 112,105.44 = 21,424.86 : x
  2. Step 2: Convert to fraction form
    74,732.67/112,105.44 = 21,424.86/x
  3. Step 3: Cross multiply
    74,732.67x = 112,105.44 × 21,424.86
  4. Step 4: Simplify right side
    74,732.67x = 2,401,843,357.24
  5. Step 5: Solve for x
    x = 2,401,843,357.24/74,732.67
  6. Step 6: Final answer
    x = 32,139.13

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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.