Home / 82,453,628.10-123,680,371.76-21,042,781.89

Finding the Fourth Proportional to 82,453,628.10, 123,680,371.76 and 21,042,781.89

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Solution

The fourth proportional to 82,453,628.10, 123,680,371.76 and 21,042,781.89 is: 31,564,154.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,453,628.10 : 123,680,371.76 = 21,042,781.89 : x
  2. Step 2: Convert to fraction form
    82,453,628.10/123,680,371.76 = 21,042,781.89/x
  3. Step 3: Cross multiply
    82,453,628.10x = 123,680,371.76 × 21,042,781.89
  4. Step 4: Simplify right side
    82,453,628.10x = 2,602,579,087,019,795.50
  5. Step 5: Solve for x
    x = 2,602,579,087,019,795.50/82,453,628.10
  6. Step 6: Final answer
    x = 31,564,154.87

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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.