Home / 43,031.20-64,456.08-19,677.28

Finding the Fourth Proportional to 43,031.20, 64,456.08 and 19,677.28

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Solution

The fourth proportional to 43,031.20, 64,456.08 and 19,677.28 is: 29,474.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,031.20 : 64,456.08 = 19,677.28 : x
  2. Step 2: Convert to fraction form
    43,031.20/64,456.08 = 19,677.28/x
  3. Step 3: Cross multiply
    43,031.20x = 64,456.08 × 19,677.28
  4. Step 4: Simplify right side
    43,031.20x = 1,268,320,333.86
  5. Step 5: Solve for x
    x = 1,268,320,333.86/43,031.20
  6. Step 6: Final answer
    x = 29,474.44

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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.