Home / 78,285,957.60-117,428,936.40-71,231,570.40

Finding the Fourth Proportional to 78,285,957.60, 117,428,936.40 and 71,231,570.40

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Solution

The fourth proportional to 78,285,957.60, 117,428,936.40 and 71,231,570.40 is: 106,847,355.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,285,957.60 : 117,428,936.40 = 71,231,570.40 : x
  2. Step 2: Convert to fraction form
    78,285,957.60/117,428,936.40 = 71,231,570.40/x
  3. Step 3: Cross multiply
    78,285,957.60x = 117,428,936.40 × 71,231,570.40
  4. Step 4: Simplify right side
    78,285,957.60x = 8,364,647,550,173,724
  5. Step 5: Solve for x
    x = 8,364,647,550,173,724/78,285,957.60
  6. Step 6: Final answer
    x = 106,847,355.60

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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.