Home / 40,402.98-60,548.25-20,639.79

Finding the Fourth Proportional to 40,402.98, 60,548.25 and 20,639.79

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Solution

The fourth proportional to 40,402.98, 60,548.25 and 20,639.79 is: 30,930.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,402.98 : 60,548.25 = 20,639.79 : x
  2. Step 2: Convert to fraction form
    40,402.98/60,548.25 = 20,639.79/x
  3. Step 3: Cross multiply
    40,402.98x = 60,548.25 × 20,639.79
  4. Step 4: Simplify right side
    40,402.98x = 1,249,703,164.87
  5. Step 5: Solve for x
    x = 1,249,703,164.87/40,402.98
  6. Step 6: Final answer
    x = 30,930.97

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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.