Home / 75,258.78-112,955.85-40,228.38

Finding the Fourth Proportional to 75,258.78, 112,955.85 and 40,228.38

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Solution

The fourth proportional to 75,258.78, 112,955.85 and 40,228.38 is: 60,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,258.78 : 112,955.85 = 40,228.38 : x
  2. Step 2: Convert to fraction form
    75,258.78/112,955.85 = 40,228.38/x
  3. Step 3: Cross multiply
    75,258.78x = 112,955.85 × 40,228.38
  4. Step 4: Simplify right side
    75,258.78x = 4,544,030,857.02
  5. Step 5: Solve for x
    x = 4,544,030,857.02/75,258.78
  6. Step 6: Final answer
    x = 60,378.75

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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.