Home / 83,428.20-125,120.40-30,852.72

Finding the Fourth Proportional to 83,428.20, 125,120.40 and 30,852.72

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Solution

The fourth proportional to 83,428.20, 125,120.40 and 30,852.72 is: 46,270.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,428.20 : 125,120.40 = 30,852.72 : x
  2. Step 2: Convert to fraction form
    83,428.20/125,120.40 = 30,852.72/x
  3. Step 3: Cross multiply
    83,428.20x = 125,120.40 × 30,852.72
  4. Step 4: Simplify right side
    83,428.20x = 3,860,304,667.49
  5. Step 5: Solve for x
    x = 3,860,304,667.49/83,428.20
  6. Step 6: Final answer
    x = 46,270.98

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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.