Home / 80,788.11-121,075.25-61,996.34

Finding the Fourth Proportional to 80,788.11, 121,075.25 and 61,996.34

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Solution

The fourth proportional to 80,788.11, 121,075.25 and 61,996.34 is: 92,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,788.11 : 121,075.25 = 61,996.34 : x
  2. Step 2: Convert to fraction form
    80,788.11/121,075.25 = 61,996.34/x
  3. Step 3: Cross multiply
    80,788.11x = 121,075.25 × 61,996.34
  4. Step 4: Simplify right side
    80,788.11x = 7,506,221,449.23
  5. Step 5: Solve for x
    x = 7,506,221,449.23/80,788.11
  6. Step 6: Final answer
    x = 92,912.45

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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.