Home / 71,138.54-98,172.06-39,307.16

Finding the Fourth Proportional to 71,138.54, 98,172.06 and 39,307.16

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Solution

The fourth proportional to 71,138.54, 98,172.06 and 39,307.16 is: 54,244.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,138.54 : 98,172.06 = 39,307.16 : x
  2. Step 2: Convert to fraction form
    71,138.54/98,172.06 = 39,307.16/x
  3. Step 3: Cross multiply
    71,138.54x = 98,172.06 × 39,307.16
  4. Step 4: Simplify right side
    71,138.54x = 3,858,864,869.95
  5. Step 5: Solve for x
    x = 3,858,864,869.95/71,138.54
  6. Step 6: Final answer
    x = 54,244.36

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1.5x scale

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.