Home / 76,431.87-114,595.47-38,919.33

Finding the Fourth Proportional to 76,431.87, 114,595.47 and 38,919.33

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Solution

The fourth proportional to 76,431.87, 114,595.47 and 38,919.33 is: 58,352.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,431.87 : 114,595.47 = 38,919.33 : x
  2. Step 2: Convert to fraction form
    76,431.87/114,595.47 = 38,919.33/x
  3. Step 3: Cross multiply
    76,431.87x = 114,595.47 × 38,919.33
  4. Step 4: Simplify right side
    76,431.87x = 4,459,978,913.44
  5. Step 5: Solve for x
    x = 4,459,978,913.44/76,431.87
  6. Step 6: Final answer
    x = 58,352.35

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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.