Home / 67,731.84-101,604.96-20,988.36

Finding the Fourth Proportional to 67,731.84, 101,604.96 and 20,988.36

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Solution

The fourth proportional to 67,731.84, 101,604.96 and 20,988.36 is: 31,484.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,731.84 : 101,604.96 = 20,988.36 : x
  2. Step 2: Convert to fraction form
    67,731.84/101,604.96 = 20,988.36/x
  3. Step 3: Cross multiply
    67,731.84x = 101,604.96 × 20,988.36
  4. Step 4: Simplify right side
    67,731.84x = 2,132,521,478.27
  5. Step 5: Solve for x
    x = 2,132,521,478.27/67,731.84
  6. Step 6: Final answer
    x = 31,484.77

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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.