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Finding the Fourth Proportional to 71,190.84, 98,234.70 and 39,355.32

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Solution

The fourth proportional to 71,190.84, 98,234.70 and 39,355.32 is: 54,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,190.84 : 98,234.70 = 39,355.32 : x
  2. Step 2: Convert to fraction form
    71,190.84/98,234.70 = 39,355.32/x
  3. Step 3: Cross multiply
    71,190.84x = 98,234.70 × 39,355.32
  4. Step 4: Simplify right side
    71,190.84x = 3,866,058,053.60
  5. Step 5: Solve for x
    x = 3,866,058,053.60/71,190.84
  6. Step 6: Final answer
    x = 54,305.55

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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.