Home / 71,621.36-98,838.80-39,793.20

Finding the Fourth Proportional to 71,621.36, 98,838.80 and 39,793.20

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Solution

The fourth proportional to 71,621.36, 98,838.80 and 39,793.20 is: 54,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,621.36 : 98,838.80 = 39,793.20 : x
  2. Step 2: Convert to fraction form
    71,621.36/98,838.80 = 39,793.20/x
  3. Step 3: Cross multiply
    71,621.36x = 98,838.80 × 39,793.20
  4. Step 4: Simplify right side
    71,621.36x = 3,933,112,136.16
  5. Step 5: Solve for x
    x = 3,933,112,136.16/71,621.36
  6. Step 6: Final answer
    x = 54,915.35

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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.