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Finding the Fourth Proportional to 77,279.10, 115,918.65 and 32,907.30

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Solution

The fourth proportional to 77,279.10, 115,918.65 and 32,907.30 is: 49,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,279.10 : 115,918.65 = 32,907.30 : x
  2. Step 2: Convert to fraction form
    77,279.10/115,918.65 = 32,907.30/x
  3. Step 3: Cross multiply
    77,279.10x = 115,918.65 × 32,907.30
  4. Step 4: Simplify right side
    77,279.10x = 3,814,569,791.15
  5. Step 5: Solve for x
    x = 3,814,569,791.15/77,279.10
  6. Step 6: Final answer
    x = 49,360.95

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1.5x scale

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.