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Finding the Third Proportional to 7,140,687.75 and 10,878,343.88

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Solution

The third proportional to 7,140,687.75 and 10,878,343.88 is: 16,572,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140,687.75 : 10,878,343.88 = 10,878,343.88 : x
  2. Step 2: Convert to fraction form
    7,140,687.75/10,878,343.88 = 10,878,343.88/x
  3. Step 3: Cross multiply
    7,140,687.75x = 10,878,343.88 × 10,878,343.88
  4. Step 4: Simplify right side
    7,140,687.75x = 118,338,365,462,750.02
  5. Step 5: Solve for x
    x = 118,338,365,462,750.02/7,140,687.75
  6. Step 6: Final answer
    x = 16,572,404.45

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.