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Finding the Fourth Proportional to 71,329.98, 98,435.35 and 39,498.87

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Solution

The fourth proportional to 71,329.98, 98,435.35 and 39,498.87 is: 54,508.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.98 : 98,435.35 = 39,498.87 : x
  2. Step 2: Convert to fraction form
    71,329.98/98,435.35 = 39,498.87/x
  3. Step 3: Cross multiply
    71,329.98x = 98,435.35 × 39,498.87
  4. Step 4: Simplify right side
    71,329.98x = 3,888,085,093.05
  5. Step 5: Solve for x
    x = 3,888,085,093.05/71,329.98
  6. Step 6: Final answer
    x = 54,508.43

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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.