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Finding the Third Proportional to 51,186,753 and 78,490,971

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Solution

The third proportional to 51,186,753 and 78,490,971 is: 120,359,901.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,186,753 : 78,490,971 = 78,490,971 : x
  2. Step 2: Convert to fraction form
    51,186,753/78,490,971 = 78,490,971/x
  3. Step 3: Cross multiply
    51,186,753x = 78,490,971 × 78,490,971
  4. Step 4: Simplify right side
    51,186,753x = 6,160,832,528,522,841
  5. Step 5: Solve for x
    x = 6,160,832,528,522,841/51,186,753
  6. Step 6: Final answer
    x = 120,359,901.10

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.