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Finding the Fourth Proportional to 99,066, 136,707.44 and 56,622

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Solution

The fourth proportional to 99,066, 136,707.44 and 56,622 is: 78,136.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,066 : 136,707.44 = 56,622 : x
  2. Step 2: Convert to fraction form
    99,066/136,707.44 = 56,622/x
  3. Step 3: Cross multiply
    99,066x = 136,707.44 × 56,622
  4. Step 4: Simplify right side
    99,066x = 7,740,648,667.68
  5. Step 5: Solve for x
    x = 7,740,648,667.68/99,066
  6. Step 6: Final answer
    x = 78,136.28

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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.