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Finding the Fourth Proportional to 57,370.76, 86,053.80 and 19,939.32

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Solution

The fourth proportional to 57,370.76, 86,053.80 and 19,939.32 is: 29,908.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,370.76 : 86,053.80 = 19,939.32 : x
  2. Step 2: Convert to fraction form
    57,370.76/86,053.80 = 19,939.32/x
  3. Step 3: Cross multiply
    57,370.76x = 86,053.80 × 19,939.32
  4. Step 4: Simplify right side
    57,370.76x = 1,715,854,255.42
  5. Step 5: Solve for x
    x = 1,715,854,255.42/57,370.76
  6. Step 6: Final answer
    x = 29,908.17

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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.