Home / 74,772.85-103,128.19-47,917.86

Finding the Fourth Proportional to 74,772.85, 103,128.19 and 47,917.86

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Solution

The fourth proportional to 74,772.85, 103,128.19 and 47,917.86 is: 66,089.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,772.85 : 103,128.19 = 47,917.86 : x
  2. Step 2: Convert to fraction form
    74,772.85/103,128.19 = 47,917.86/x
  3. Step 3: Cross multiply
    74,772.85x = 103,128.19 × 47,917.86
  4. Step 4: Simplify right side
    74,772.85x = 4,941,682,170.47
  5. Step 5: Solve for x
    x = 4,941,682,170.47/74,772.85
  6. Step 6: Final answer
    x = 66,089.26

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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.