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Finding the Fourth Proportional to 71,116.77, 98,137.54 and 39,279.52

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Solution

The fourth proportional to 71,116.77, 98,137.54 and 39,279.52 is: 54,203.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,116.77 : 98,137.54 = 39,279.52 : x
  2. Step 2: Convert to fraction form
    71,116.77/98,137.54 = 39,279.52/x
  3. Step 3: Cross multiply
    71,116.77x = 98,137.54 × 39,279.52
  4. Step 4: Simplify right side
    71,116.77x = 3,854,795,465.18
  5. Step 5: Solve for x
    x = 3,854,795,465.18/71,116.77
  6. Step 6: Final answer
    x = 54,203.75

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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.