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Finding the Fourth Proportional to 77,489.19, 106,907.58 and 50,647.19

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Solution

The fourth proportional to 77,489.19, 106,907.58 and 50,647.19 is: 69,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,489.19 : 106,907.58 = 50,647.19 : x
  2. Step 2: Convert to fraction form
    77,489.19/106,907.58 = 50,647.19/x
  3. Step 3: Cross multiply
    77,489.19x = 106,907.58 × 50,647.19
  4. Step 4: Simplify right side
    77,489.19x = 5,414,568,583.52
  5. Step 5: Solve for x
    x = 5,414,568,583.52/77,489.19
  6. Step 6: Final answer
    x = 69,875.15

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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.