Home / 82,461,320.70-123,691,981.05-80,571,752.70

Finding the Fourth Proportional to 82,461,320.70, 123,691,981.05 and 80,571,752.70

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Solution

The fourth proportional to 82,461,320.70, 123,691,981.05 and 80,571,752.70 is: 120,857,629.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,461,320.70 : 123,691,981.05 = 80,571,752.70 : x
  2. Step 2: Convert to fraction form
    82,461,320.70/123,691,981.05 = 80,571,752.70/x
  3. Step 3: Cross multiply
    82,461,320.70x = 123,691,981.05 × 80,571,752.70
  4. Step 4: Simplify right side
    82,461,320.70x = 9,966,079,708,133,686
  5. Step 5: Solve for x
    x = 9,966,079,708,133,686/82,461,320.70
  6. Step 6: Final answer
    x = 120,857,629.05

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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.