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Finding the Fourth Proportional to 51,991.56, 78,000.24 and 15,055.56

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Solution

The fourth proportional to 51,991.56, 78,000.24 and 15,055.56 is: 22,587.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,991.56 : 78,000.24 = 15,055.56 : x
  2. Step 2: Convert to fraction form
    51,991.56/78,000.24 = 15,055.56/x
  3. Step 3: Cross multiply
    51,991.56x = 78,000.24 × 15,055.56
  4. Step 4: Simplify right side
    51,991.56x = 1,174,337,293.33
  5. Step 5: Solve for x
    x = 1,174,337,293.33/51,991.56
  6. Step 6: Final answer
    x = 22,587.08

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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.