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Finding the Fourth Proportional to 78,550.80, 117,813.48 and 25,240.26

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Solution

The fourth proportional to 78,550.80, 117,813.48 and 25,240.26 is: 37,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,550.80 : 117,813.48 = 25,240.26 : x
  2. Step 2: Convert to fraction form
    78,550.80/117,813.48 = 25,240.26/x
  3. Step 3: Cross multiply
    78,550.80x = 117,813.48 × 25,240.26
  4. Step 4: Simplify right side
    78,550.80x = 2,973,642,866.70
  5. Step 5: Solve for x
    x = 2,973,642,866.70/78,550.80
  6. Step 6: Final answer
    x = 37,856.30

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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.