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Finding the Fourth Proportional to 71,150.70, 98,187.80 and 39,319.53

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Solution

The fourth proportional to 71,150.70, 98,187.80 and 39,319.53 is: 54,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,150.70 : 98,187.80 = 39,319.53 : x
  2. Step 2: Convert to fraction form
    71,150.70/98,187.80 = 39,319.53/x
  3. Step 3: Cross multiply
    71,150.70x = 98,187.80 × 39,319.53
  4. Step 4: Simplify right side
    71,150.70x = 3,860,697,582.93
  5. Step 5: Solve for x
    x = 3,860,697,582.93/71,150.70
  6. Step 6: Final answer
    x = 54,260.85

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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.