Home / 56,766.90-78,336.21-31,615.86

Finding the Fourth Proportional to 56,766.90, 78,336.21 and 31,615.86

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Solution

The fourth proportional to 56,766.90, 78,336.21 and 31,615.86 is: 43,628.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,766.90 : 78,336.21 = 31,615.86 : x
  2. Step 2: Convert to fraction form
    56,766.90/78,336.21 = 31,615.86/x
  3. Step 3: Cross multiply
    56,766.90x = 78,336.21 × 31,615.86
  4. Step 4: Simplify right side
    56,766.90x = 2,476,666,648.29
  5. Step 5: Solve for x
    x = 2,476,666,648.29/56,766.90
  6. Step 6: Final answer
    x = 43,628.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.