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Finding the Fourth Proportional to 71,500.96, 98,794.08 and 68,978.08

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Solution

The fourth proportional to 71,500.96, 98,794.08 and 68,978.08 is: 95,308.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,500.96 : 98,794.08 = 68,978.08 : x
  2. Step 2: Convert to fraction form
    71,500.96/98,794.08 = 68,978.08/x
  3. Step 3: Cross multiply
    71,500.96x = 98,794.08 × 68,978.08
  4. Step 4: Simplify right side
    71,500.96x = 6,814,625,953.77
  5. Step 5: Solve for x
    x = 6,814,625,953.77/71,500.96
  6. Step 6: Final answer
    x = 95,308.17

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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.