Home / 71,891.28-99,208.80-40,059.36

Finding the Fourth Proportional to 71,891.28, 99,208.80 and 40,059.36

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Solution

The fourth proportional to 71,891.28, 99,208.80 and 40,059.36 is: 55,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,891.28 : 99,208.80 = 40,059.36 : x
  2. Step 2: Convert to fraction form
    71,891.28/99,208.80 = 40,059.36/x
  3. Step 3: Cross multiply
    71,891.28x = 99,208.80 × 40,059.36
  4. Step 4: Simplify right side
    71,891.28x = 3,974,241,034.37
  5. Step 5: Solve for x
    x = 3,974,241,034.37/71,891.28
  6. Step 6: Final answer
    x = 55,281.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.