Home / 43,125.39-64,666.21-19,731.78

Finding the Fourth Proportional to 43,125.39, 64,666.21 and 19,731.78

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Solution

The fourth proportional to 43,125.39, 64,666.21 and 19,731.78 is: 29,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,125.39 : 64,666.21 = 19,731.78 : x
  2. Step 2: Convert to fraction form
    43,125.39/64,666.21 = 19,731.78/x
  3. Step 3: Cross multiply
    43,125.39x = 64,666.21 × 19,731.78
  4. Step 4: Simplify right side
    43,125.39x = 1,275,979,429.15
  5. Step 5: Solve for x
    x = 1,275,979,429.15/43,125.39
  6. Step 6: Final answer
    x = 29,587.66

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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.