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Finding the Third Proportional to 39,021,928 and 84,037,316

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Solution

The third proportional to 39,021,928 and 84,037,316 is: 180,982,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021,928 : 84,037,316 = 84,037,316 : x
  2. Step 2: Convert to fraction form
    39,021,928/84,037,316 = 84,037,316/x
  3. Step 3: Cross multiply
    39,021,928x = 84,037,316 × 84,037,316
  4. Step 4: Simplify right side
    39,021,928x = 7,062,270,480,483,856
  5. Step 5: Solve for x
    x = 7,062,270,480,483,856/39,021,928
  6. Step 6: Final answer
    x = 180,982,100.13

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.