Home / 82,428,429.26-123,646,006.40-21,019,180.61

Finding the Fourth Proportional to 82,428,429.26, 123,646,006.40 and 21,019,180.61

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Solution

The fourth proportional to 82,428,429.26, 123,646,006.40 and 21,019,180.61 is: 31,529,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,428,429.26 : 123,646,006.40 = 21,019,180.61 : x
  2. Step 2: Convert to fraction form
    82,428,429.26/123,646,006.40 = 21,019,180.61/x
  3. Step 3: Cross multiply
    82,428,429.26x = 123,646,006.40 × 21,019,180.61
  4. Step 4: Simplify right side
    82,428,429.26x = 2,598,937,739,503,490
  5. Step 5: Solve for x
    x = 2,598,937,739,503,490/82,428,429.26
  6. Step 6: Final answer
    x = 31,529,628.35

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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.