Home / 39,920.85-59,892.21-31,628.61

Finding the Fourth Proportional to 39,920.85, 59,892.21 and 31,628.61

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Solution

The fourth proportional to 39,920.85, 59,892.21 and 31,628.61 is: 47,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,920.85 : 59,892.21 = 31,628.61 : x
  2. Step 2: Convert to fraction form
    39,920.85/59,892.21 = 31,628.61/x
  3. Step 3: Cross multiply
    39,920.85x = 59,892.21 × 31,628.61
  4. Step 4: Simplify right side
    39,920.85x = 1,894,307,352.13
  5. Step 5: Solve for x
    x = 1,894,307,352.13/39,920.85
  6. Step 6: Final answer
    x = 47,451.58

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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.