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Finding the Fourth Proportional to 98,727, 136,243.26 and 53,404.98

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Solution

The fourth proportional to 98,727, 136,243.26 and 53,404.98 is: 73,698.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,727 : 136,243.26 = 53,404.98 : x
  2. Step 2: Convert to fraction form
    98,727/136,243.26 = 53,404.98/x
  3. Step 3: Cross multiply
    98,727x = 136,243.26 × 53,404.98
  4. Step 4: Simplify right side
    98,727x = 7,276,068,575.43
  5. Step 5: Solve for x
    x = 7,276,068,575.43/98,727
  6. Step 6: Final answer
    x = 73,698.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.