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Finding the Third Proportional to 28,153,980 and 61,689,438

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Solution

The third proportional to 28,153,980 and 61,689,438 is: 135,170,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,153,980 : 61,689,438 = 61,689,438 : x
  2. Step 2: Convert to fraction form
    28,153,980/61,689,438 = 61,689,438/x
  3. Step 3: Cross multiply
    28,153,980x = 61,689,438 × 61,689,438
  4. Step 4: Simplify right side
    28,153,980x = 3,805,586,760,755,844
  5. Step 5: Solve for x
    x = 3,805,586,760,755,844/28,153,980
  6. Step 6: Final answer
    x = 135,170,471.84

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.