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Finding the Fourth Proportional to 71,065.36, 98,070.50 and 39,234.52

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Solution

The fourth proportional to 71,065.36, 98,070.50 and 39,234.52 is: 54,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,065.36 : 98,070.50 = 39,234.52 : x
  2. Step 2: Convert to fraction form
    71,065.36/98,070.50 = 39,234.52/x
  3. Step 3: Cross multiply
    71,065.36x = 98,070.50 × 39,234.52
  4. Step 4: Simplify right side
    71,065.36x = 3,847,748,993.66
  5. Step 5: Solve for x
    x = 3,847,748,993.66/71,065.36
  6. Step 6: Final answer
    x = 54,143.80

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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.