Home / 77,988.90-116,982.30-18,824.04

Finding the Fourth Proportional to 77,988.90, 116,982.30 and 18,824.04

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Solution

The fourth proportional to 77,988.90, 116,982.30 and 18,824.04 is: 28,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,988.90 : 116,982.30 = 18,824.04 : x
  2. Step 2: Convert to fraction form
    77,988.90/116,982.30 = 18,824.04/x
  3. Step 3: Cross multiply
    77,988.90x = 116,982.30 × 18,824.04
  4. Step 4: Simplify right side
    77,988.90x = 2,202,079,494.49
  5. Step 5: Solve for x
    x = 2,202,079,494.49/77,988.90
  6. Step 6: Final answer
    x = 28,235.81

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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.