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Finding the Fourth Proportional to 115,321.80, 172,925.10 and 52,921.80

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Solution

The fourth proportional to 115,321.80, 172,925.10 and 52,921.80 is: 79,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,321.80 : 172,925.10 = 52,921.80 : x
  2. Step 2: Convert to fraction form
    115,321.80/172,925.10 = 52,921.80/x
  3. Step 3: Cross multiply
    115,321.80x = 172,925.10 × 52,921.80
  4. Step 4: Simplify right side
    115,321.80x = 9,151,507,557.18
  5. Step 5: Solve for x
    x = 9,151,507,557.18/115,321.80
  6. Step 6: Final answer
    x = 79,356.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.