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Finding the Third Proportional to 18,960,768 and 42,021,360

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Solution

The third proportional to 18,960,768 and 42,021,360 is: 93,128,859.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960,768 : 42,021,360 = 42,021,360 : x
  2. Step 2: Convert to fraction form
    18,960,768/42,021,360 = 42,021,360/x
  3. Step 3: Cross multiply
    18,960,768x = 42,021,360 × 42,021,360
  4. Step 4: Simplify right side
    18,960,768x = 1,765,794,696,249,600
  5. Step 5: Solve for x
    x = 1,765,794,696,249,600/18,960,768
  6. Step 6: Final answer
    x = 93,128,859.35

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.