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Finding the Fourth Proportional to 57,289.96, 79,060.62 and 31,798.09

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Solution

The fourth proportional to 57,289.96, 79,060.62 and 31,798.09 is: 43,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.96 : 79,060.62 = 31,798.09 : x
  2. Step 2: Convert to fraction form
    57,289.96/79,060.62 = 31,798.09/x
  3. Step 3: Cross multiply
    57,289.96x = 79,060.62 × 31,798.09
  4. Step 4: Simplify right side
    57,289.96x = 2,513,976,710.22
  5. Step 5: Solve for x
    x = 2,513,976,710.22/57,289.96
  6. Step 6: Final answer
    x = 43,881.63

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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.