Home / 77,431.38-106,860.42-43,442.28

Finding the Fourth Proportional to 77,431.38, 106,860.42 and 43,442.28

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Solution

The fourth proportional to 77,431.38, 106,860.42 and 43,442.28 is: 59,953.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,431.38 : 106,860.42 = 43,442.28 : x
  2. Step 2: Convert to fraction form
    77,431.38/106,860.42 = 43,442.28/x
  3. Step 3: Cross multiply
    77,431.38x = 106,860.42 × 43,442.28
  4. Step 4: Simplify right side
    77,431.38x = 4,642,260,286.56
  5. Step 5: Solve for x
    x = 4,642,260,286.56/77,431.38
  6. Step 6: Final answer
    x = 59,953.22

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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.