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Finding the Fourth Proportional to 78,844.60, 118,285.80 and 26,254.56

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Solution

The fourth proportional to 78,844.60, 118,285.80 and 26,254.56 is: 39,388.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,844.60 : 118,285.80 = 26,254.56 : x
  2. Step 2: Convert to fraction form
    78,844.60/118,285.80 = 26,254.56/x
  3. Step 3: Cross multiply
    78,844.60x = 118,285.80 × 26,254.56
  4. Step 4: Simplify right side
    78,844.60x = 3,105,541,633.25
  5. Step 5: Solve for x
    x = 3,105,541,633.25/78,844.60
  6. Step 6: Final answer
    x = 39,388.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.