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Finding the Fourth Proportional to 78,907.56, 118,380.38 and 26,317.48

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Solution

The fourth proportional to 78,907.56, 118,380.38 and 26,317.48 is: 39,482.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,907.56 : 118,380.38 = 26,317.48 : x
  2. Step 2: Convert to fraction form
    78,907.56/118,380.38 = 26,317.48/x
  3. Step 3: Cross multiply
    78,907.56x = 118,380.38 × 26,317.48
  4. Step 4: Simplify right side
    78,907.56x = 3,115,473,283.04
  5. Step 5: Solve for x
    x = 3,115,473,283.04/78,907.56
  6. Step 6: Final answer
    x = 39,482.57

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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.