Home / 81,656,353.60-122,342,812.80-52,887,680.80

Finding the Fourth Proportional to 81,656,353.60, 122,342,812.80 and 52,887,680.80

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Solution

The fourth proportional to 81,656,353.60, 122,342,812.80 and 52,887,680.80 is: 79,239,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656,353.60 : 122,342,812.80 = 52,887,680.80 : x
  2. Step 2: Convert to fraction form
    81,656,353.60/122,342,812.80 = 52,887,680.80/x
  3. Step 3: Cross multiply
    81,656,353.60x = 122,342,812.80 × 52,887,680.80
  4. Step 4: Simplify right side
    81,656,353.60x = 6,470,427,631,540,554
  5. Step 5: Solve for x
    x = 6,470,427,631,540,554/81,656,353.60
  6. Step 6: Final answer
    x = 79,239,732.69

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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.