Home / 78,938.78-118,492.46-33,982.39

Finding the Fourth Proportional to 78,938.78, 118,492.46 and 33,982.39

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Solution

The fourth proportional to 78,938.78, 118,492.46 and 33,982.39 is: 51,009.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,938.78 : 118,492.46 = 33,982.39 : x
  2. Step 2: Convert to fraction form
    78,938.78/118,492.46 = 33,982.39/x
  3. Step 3: Cross multiply
    78,938.78x = 118,492.46 × 33,982.39
  4. Step 4: Simplify right side
    78,938.78x = 4,026,656,379.11
  5. Step 5: Solve for x
    x = 4,026,656,379.11/78,938.78
  6. Step 6: Final answer
    x = 51,009.86

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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.