Home / 77,857.25-107,442.99-42,047.26

Finding the Fourth Proportional to 77,857.25, 107,442.99 and 42,047.26

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Solution

The fourth proportional to 77,857.25, 107,442.99 and 42,047.26 is: 58,025.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,857.25 : 107,442.99 = 42,047.26 : x
  2. Step 2: Convert to fraction form
    77,857.25/107,442.99 = 42,047.26/x
  3. Step 3: Cross multiply
    77,857.25x = 107,442.99 × 42,047.26
  4. Step 4: Simplify right side
    77,857.25x = 4,517,683,067.10
  5. Step 5: Solve for x
    x = 4,517,683,067.10/77,857.25
  6. Step 6: Final answer
    x = 58,025.21

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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.