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Finding the Fourth Proportional to 99,021, 136,649.01 and 53,698.97

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Solution

The fourth proportional to 99,021, 136,649.01 and 53,698.97 is: 74,104.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,021 : 136,649.01 = 53,698.97 : x
  2. Step 2: Convert to fraction form
    99,021/136,649.01 = 53,698.97/x
  3. Step 3: Cross multiply
    99,021x = 136,649.01 × 53,698.97
  4. Step 4: Simplify right side
    99,021x = 7,337,911,088.52
  5. Step 5: Solve for x
    x = 7,337,911,088.52/99,021
  6. Step 6: Final answer
    x = 74,104.59

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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.