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Finding the Fourth Proportional to 115,058, 172,337.72 and 55,769.64

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Solution

The fourth proportional to 115,058, 172,337.72 and 55,769.64 is: 83,533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,058 : 172,337.72 = 55,769.64 : x
  2. Step 2: Convert to fraction form
    115,058/172,337.72 = 55,769.64/x
  3. Step 3: Cross multiply
    115,058x = 172,337.72 × 55,769.64
  4. Step 4: Simplify right side
    115,058x = 9,611,212,602.82
  5. Step 5: Solve for x
    x = 9,611,212,602.82/115,058
  6. Step 6: Final answer
    x = 83,533.63

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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.