Home / 56,107.64-77,428.15-30,957.20

Finding the Fourth Proportional to 56,107.64, 77,428.15 and 30,957.20

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Solution

The fourth proportional to 56,107.64, 77,428.15 and 30,957.20 is: 42,720.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,107.64 : 77,428.15 = 30,957.20 : x
  2. Step 2: Convert to fraction form
    56,107.64/77,428.15 = 30,957.20/x
  3. Step 3: Cross multiply
    56,107.64x = 77,428.15 × 30,957.20
  4. Step 4: Simplify right side
    56,107.64x = 2,396,958,260.65
  5. Step 5: Solve for x
    x = 2,396,958,260.65/56,107.64
  6. Step 6: Final answer
    x = 42,720.71

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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.