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Finding the Third Proportional to 49,139,877 and 78,228,979

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Solution

The third proportional to 49,139,877 and 78,228,979 is: 124,537,819.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,139,877 : 78,228,979 = 78,228,979 : x
  2. Step 2: Convert to fraction form
    49,139,877/78,228,979 = 78,228,979/x
  3. Step 3: Cross multiply
    49,139,877x = 78,228,979 × 78,228,979
  4. Step 4: Simplify right side
    49,139,877x = 6,119,773,155,382,441
  5. Step 5: Solve for x
    x = 6,119,773,155,382,441/49,139,877
  6. Step 6: Final answer
    x = 124,537,819.97

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.