Home / 54,655.21-75,422.64-30,782.08

Finding the Fourth Proportional to 54,655.21, 75,422.64 and 30,782.08

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Solution

The fourth proportional to 54,655.21, 75,422.64 and 30,782.08 is: 42,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,655.21 : 75,422.64 = 30,782.08 : x
  2. Step 2: Convert to fraction form
    54,655.21/75,422.64 = 30,782.08/x
  3. Step 3: Cross multiply
    54,655.21x = 75,422.64 × 30,782.08
  4. Step 4: Simplify right side
    54,655.21x = 2,321,665,738.29
  5. Step 5: Solve for x
    x = 2,321,665,738.29/54,655.21
  6. Step 6: Final answer
    x = 42,478.40

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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.