Home / 85,764,696.40-128,647,044.60-80,095,992.40

Finding the Fourth Proportional to 85,764,696.40, 128,647,044.60 and 80,095,992.40

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Solution

The fourth proportional to 85,764,696.40, 128,647,044.60 and 80,095,992.40 is: 120,143,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,764,696.40 : 128,647,044.60 = 80,095,992.40 : x
  2. Step 2: Convert to fraction form
    85,764,696.40/128,647,044.60 = 80,095,992.40/x
  3. Step 3: Cross multiply
    85,764,696.40x = 128,647,044.60 × 80,095,992.40
  4. Step 4: Simplify right side
    85,764,696.40x = 10,304,112,706,564,062
  5. Step 5: Solve for x
    x = 10,304,112,706,564,062/85,764,696.40
  6. Step 6: Final answer
    x = 120,143,988.60

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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.