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Finding the Third Proportional to 39,911,720 and 86,210,128

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Solution

The third proportional to 39,911,720 and 86,210,128 is: 186,215,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911,720 : 86,210,128 = 86,210,128 : x
  2. Step 2: Convert to fraction form
    39,911,720/86,210,128 = 86,210,128/x
  3. Step 3: Cross multiply
    39,911,720x = 86,210,128 × 86,210,128
  4. Step 4: Simplify right side
    39,911,720x = 7,432,186,169,776,384
  5. Step 5: Solve for x
    x = 7,432,186,169,776,384/39,911,720
  6. Step 6: Final answer
    x = 186,215,632.14

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These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.