Home / 71,712.36-98,955.48-39,876.12

Finding the Fourth Proportional to 71,712.36, 98,955.48 and 39,876.12

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Solution

The fourth proportional to 71,712.36, 98,955.48 and 39,876.12 is: 55,024.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,712.36 : 98,955.48 = 39,876.12 : x
  2. Step 2: Convert to fraction form
    71,712.36/98,955.48 = 39,876.12/x
  3. Step 3: Cross multiply
    71,712.36x = 98,955.48 × 39,876.12
  4. Step 4: Simplify right side
    71,712.36x = 3,945,960,595.14
  5. Step 5: Solve for x
    x = 3,945,960,595.14/71,712.36
  6. Step 6: Final answer
    x = 55,024.83

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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.