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Finding the Fourth Proportional to 77,907.42, 107,546.13 and 60,640.65

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Solution

The fourth proportional to 77,907.42, 107,546.13 and 60,640.65 is: 83,710.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,907.42 : 107,546.13 = 60,640.65 : x
  2. Step 2: Convert to fraction form
    77,907.42/107,546.13 = 60,640.65/x
  3. Step 3: Cross multiply
    77,907.42x = 107,546.13 × 60,640.65
  4. Step 4: Simplify right side
    77,907.42x = 6,521,667,228.18
  5. Step 5: Solve for x
    x = 6,521,667,228.18/77,907.42
  6. Step 6: Final answer
    x = 83,710.48

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1.5x scale

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.