Home / 78,201.02-117,301.48-31,442.96

Finding the Fourth Proportional to 78,201.02, 117,301.48 and 31,442.96

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Solution

The fourth proportional to 78,201.02, 117,301.48 and 31,442.96 is: 47,164.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.02 : 117,301.48 = 31,442.96 : x
  2. Step 2: Convert to fraction form
    78,201.02/117,301.48 = 31,442.96/x
  3. Step 3: Cross multiply
    78,201.02x = 117,301.48 × 31,442.96
  4. Step 4: Simplify right side
    78,201.02x = 3,688,305,743.58
  5. Step 5: Solve for x
    x = 3,688,305,743.58/78,201.02
  6. Step 6: Final answer
    x = 47,164.42

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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.