Home / 75,308.40-112,975.56-30,959.28

Finding the Fourth Proportional to 75,308.40, 112,975.56 and 30,959.28

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Solution

The fourth proportional to 75,308.40, 112,975.56 and 30,959.28 is: 46,444.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,308.40 : 112,975.56 = 30,959.28 : x
  2. Step 2: Convert to fraction form
    75,308.40/112,975.56 = 30,959.28/x
  3. Step 3: Cross multiply
    75,308.40x = 112,975.56 × 30,959.28
  4. Step 4: Simplify right side
    75,308.40x = 3,497,641,995.20
  5. Step 5: Solve for x
    x = 3,497,641,995.20/75,308.40
  6. Step 6: Final answer
    x = 46,444.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.