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Finding the Fourth Proportional to 76,481.52, 105,501.96 and 71,069.16

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Solution

The fourth proportional to 76,481.52, 105,501.96 and 71,069.16 is: 98,035.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,481.52 : 105,501.96 = 71,069.16 : x
  2. Step 2: Convert to fraction form
    76,481.52/105,501.96 = 71,069.16/x
  3. Step 3: Cross multiply
    76,481.52x = 105,501.96 × 71,069.16
  4. Step 4: Simplify right side
    76,481.52x = 7,497,935,675.55
  5. Step 5: Solve for x
    x = 7,497,935,675.55/76,481.52
  6. Step 6: Final answer
    x = 98,035.91

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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.