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Finding the Fourth Proportional to 101,455, 140,002.76 and 55,513.64

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Solution

The fourth proportional to 101,455, 140,002.76 and 55,513.64 is: 76,606.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,455 : 140,002.76 = 55,513.64 : x
  2. Step 2: Convert to fraction form
    101,455/140,002.76 = 55,513.64/x
  3. Step 3: Cross multiply
    101,455x = 140,002.76 × 55,513.64
  4. Step 4: Simplify right side
    101,455x = 7,772,062,817.65
  5. Step 5: Solve for x
    x = 7,772,062,817.65/101,455
  6. Step 6: Final answer
    x = 76,606.01

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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.