Home / 81,651,787.60-122,309,719.80-56,121,624.40

Finding the Fourth Proportional to 81,651,787.60, 122,309,719.80 and 56,121,624.40

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Solution

The fourth proportional to 81,651,787.60, 122,309,719.80 and 56,121,624.40 is: 84,066,991.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,651,787.60 : 122,309,719.80 = 56,121,624.40 : x
  2. Step 2: Convert to fraction form
    81,651,787.60/122,309,719.80 = 56,121,624.40/x
  3. Step 3: Cross multiply
    81,651,787.60x = 122,309,719.80 × 56,121,624.40
  4. Step 4: Simplify right side
    81,651,787.60x = 6,864,220,155,084,843
  5. Step 5: Solve for x
    x = 6,864,220,155,084,843/81,651,787.60
  6. Step 6: Final answer
    x = 84,066,991.76

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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.