Home / 78,216,006.80-117,324,010.20-49,305,616.40

Finding the Fourth Proportional to 78,216,006.80, 117,324,010.20 and 49,305,616.40

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Solution

The fourth proportional to 78,216,006.80, 117,324,010.20 and 49,305,616.40 is: 73,958,424.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,216,006.80 : 117,324,010.20 = 49,305,616.40 : x
  2. Step 2: Convert to fraction form
    78,216,006.80/117,324,010.20 = 49,305,616.40/x
  3. Step 3: Cross multiply
    78,216,006.80x = 117,324,010.20 × 49,305,616.40
  4. Step 4: Simplify right side
    78,216,006.80x = 5,784,732,641,430,887
  5. Step 5: Solve for x
    x = 5,784,732,641,430,887/78,216,006.80
  6. Step 6: Final answer
    x = 73,958,424.60

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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.