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Finding the Third Proportional to 18,312,862 and 39,811,090

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Solution

The third proportional to 18,312,862 and 39,811,090 is: 86,546,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312,862 : 39,811,090 = 39,811,090 : x
  2. Step 2: Convert to fraction form
    18,312,862/39,811,090 = 39,811,090/x
  3. Step 3: Cross multiply
    18,312,862x = 39,811,090 × 39,811,090
  4. Step 4: Simplify right side
    18,312,862x = 1,584,922,886,988,100
  5. Step 5: Solve for x
    x = 1,584,922,886,988,100/18,312,862
  6. Step 6: Final answer
    x = 86,546,979.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.