Home / 75,688.45-113,585.38-31,315.44

Finding the Fourth Proportional to 75,688.45, 113,585.38 and 31,315.44

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Solution

The fourth proportional to 75,688.45, 113,585.38 and 31,315.44 is: 46,994.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,688.45 : 113,585.38 = 31,315.44 : x
  2. Step 2: Convert to fraction form
    75,688.45/113,585.38 = 31,315.44/x
  3. Step 3: Cross multiply
    75,688.45x = 113,585.38 × 31,315.44
  4. Step 4: Simplify right side
    75,688.45x = 3,556,975,648.03
  5. Step 5: Solve for x
    x = 3,556,975,648.03/75,688.45
  6. Step 6: Final answer
    x = 46,994.96

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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.