Home / 71,040.58-98,031.81-39,208.66

Finding the Fourth Proportional to 71,040.58, 98,031.81 and 39,208.66

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Solution

The fourth proportional to 71,040.58, 98,031.81 and 39,208.66 is: 54,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,040.58 : 98,031.81 = 39,208.66 : x
  2. Step 2: Convert to fraction form
    71,040.58/98,031.81 = 39,208.66/x
  3. Step 3: Cross multiply
    71,040.58x = 98,031.81 × 39,208.66
  4. Step 4: Simplify right side
    71,040.58x = 3,843,695,907.47
  5. Step 5: Solve for x
    x = 3,843,695,907.47/71,040.58
  6. Step 6: Final answer
    x = 54,105.64

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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.