Home / 77,979.36-107,611.26-42,169.26

Finding the Fourth Proportional to 77,979.36, 107,611.26 and 42,169.26

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Solution

The fourth proportional to 77,979.36, 107,611.26 and 42,169.26 is: 58,193.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,979.36 : 107,611.26 = 42,169.26 : x
  2. Step 2: Convert to fraction form
    77,979.36/107,611.26 = 42,169.26/x
  3. Step 3: Cross multiply
    77,979.36x = 107,611.26 × 42,169.26
  4. Step 4: Simplify right side
    77,979.36x = 4,537,887,201.87
  5. Step 5: Solve for x
    x = 4,537,887,201.87/77,979.36
  6. Step 6: Final answer
    x = 58,193.44

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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.