Home / 81,956,076.40-122,934,114.60-77,253,151.60

Finding the Fourth Proportional to 81,956,076.40, 122,934,114.60 and 77,253,151.60

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Solution

The fourth proportional to 81,956,076.40, 122,934,114.60 and 77,253,151.60 is: 115,879,727.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,956,076.40 : 122,934,114.60 = 77,253,151.60 : x
  2. Step 2: Convert to fraction form
    81,956,076.40/122,934,114.60 = 77,253,151.60/x
  3. Step 3: Cross multiply
    81,956,076.40x = 122,934,114.60 × 77,253,151.60
  4. Step 4: Simplify right side
    81,956,076.40x = 9,497,047,792,005,572
  5. Step 5: Solve for x
    x = 9,497,047,792,005,572/81,956,076.40
  6. Step 6: Final answer
    x = 115,879,727.40

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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.