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Finding the Fourth Proportional to 70,997.78, 98,009.12 and 45,166.95

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Solution

The fourth proportional to 70,997.78, 98,009.12 and 45,166.95 is: 62,350.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,997.78 : 98,009.12 = 45,166.95 : x
  2. Step 2: Convert to fraction form
    70,997.78/98,009.12 = 45,166.95/x
  3. Step 3: Cross multiply
    70,997.78x = 98,009.12 × 45,166.95
  4. Step 4: Simplify right side
    70,997.78x = 4,426,773,135.50
  5. Step 5: Solve for x
    x = 4,426,773,135.50/70,997.78
  6. Step 6: Final answer
    x = 62,350.86

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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.