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Finding the Fourth Proportional to 57,289.91, 79,054.81 and 31,795.87

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Solution

The fourth proportional to 57,289.91, 79,054.81 and 31,795.87 is: 43,875.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,289.91 : 79,054.81 = 31,795.87 : x
  2. Step 2: Convert to fraction form
    57,289.91/79,054.81 = 31,795.87/x
  3. Step 3: Cross multiply
    57,289.91x = 79,054.81 × 31,795.87
  4. Step 4: Simplify right side
    57,289.91x = 2,513,616,199.82
  5. Step 5: Solve for x
    x = 2,513,616,199.82/57,289.91
  6. Step 6: Final answer
    x = 43,875.38

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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.