Home / 78,418,010.30-117,627,015.45-74,890,816.70

Finding the Fourth Proportional to 78,418,010.30, 117,627,015.45 and 74,890,816.70

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Solution

The fourth proportional to 78,418,010.30, 117,627,015.45 and 74,890,816.70 is: 112,336,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,418,010.30 : 117,627,015.45 = 74,890,816.70 : x
  2. Step 2: Convert to fraction form
    78,418,010.30/117,627,015.45 = 74,890,816.70/x
  3. Step 3: Cross multiply
    78,418,010.30x = 117,627,015.45 × 74,890,816.70
  4. Step 4: Simplify right side
    78,418,010.30x = 8,809,183,253,034,019
  5. Step 5: Solve for x
    x = 8,809,183,253,034,019/78,418,010.30
  6. Step 6: Final answer
    x = 112,336,225.05

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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.