Home / 39,930,231-55,103,718.87-21,595,516.50

Finding the Fourth Proportional to 39,930,231, 55,103,718.87 and 21,595,516.50

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Solution

The fourth proportional to 39,930,231, 55,103,718.87 and 21,595,516.50 is: 29,801,812.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,930,231 : 55,103,718.87 = 21,595,516.50 : x
  2. Step 2: Convert to fraction form
    39,930,231/55,103,718.87 = 21,595,516.50/x
  3. Step 3: Cross multiply
    39,930,231x = 55,103,718.87 × 21,595,516.50
  4. Step 4: Simplify right side
    39,930,231x = 1,189,993,270,068,446.25
  5. Step 5: Solve for x
    x = 1,189,993,270,068,446.25/39,930,231
  6. Step 6: Final answer
    x = 29,801,812.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.