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Finding the Fourth Proportional to 40,992.48, 61,507.04 and 19,920.96

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Solution

The fourth proportional to 40,992.48, 61,507.04 and 19,920.96 is: 29,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,992.48 : 61,507.04 = 19,920.96 : x
  2. Step 2: Convert to fraction form
    40,992.48/61,507.04 = 19,920.96/x
  3. Step 3: Cross multiply
    40,992.48x = 61,507.04 × 19,920.96
  4. Step 4: Simplify right side
    40,992.48x = 1,225,279,283.56
  5. Step 5: Solve for x
    x = 1,225,279,283.56/40,992.48
  6. Step 6: Final answer
    x = 29,890.34

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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.