Home / 78,515.64-108,367.02-45,003.96

Finding the Fourth Proportional to 78,515.64, 108,367.02 and 45,003.96

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Solution

The fourth proportional to 78,515.64, 108,367.02 and 45,003.96 is: 62,114.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,515.64 : 108,367.02 = 45,003.96 : x
  2. Step 2: Convert to fraction form
    78,515.64/108,367.02 = 45,003.96/x
  3. Step 3: Cross multiply
    78,515.64x = 108,367.02 × 45,003.96
  4. Step 4: Simplify right side
    78,515.64x = 4,876,945,033.40
  5. Step 5: Solve for x
    x = 4,876,945,033.40/78,515.64
  6. Step 6: Final answer
    x = 62,114.31

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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.