Home / 71,121.04-98,146.72-39,289.95

Finding the Fourth Proportional to 71,121.04, 98,146.72 and 39,289.95

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Solution

The fourth proportional to 71,121.04, 98,146.72 and 39,289.95 is: 54,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,121.04 : 98,146.72 = 39,289.95 : x
  2. Step 2: Convert to fraction form
    71,121.04/98,146.72 = 39,289.95/x
  3. Step 3: Cross multiply
    71,121.04x = 98,146.72 × 39,289.95
  4. Step 4: Simplify right side
    71,121.04x = 3,856,179,721.46
  5. Step 5: Solve for x
    x = 3,856,179,721.46/71,121.04
  6. Step 6: Final answer
    x = 54,219.96

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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.