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Finding the Fourth Proportional to 57,810.81, 79,791.80 and 35,145

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Solution

The fourth proportional to 57,810.81, 79,791.80 and 35,145 is: 48,507.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,810.81 : 79,791.80 = 35,145 : x
  2. Step 2: Convert to fraction form
    57,810.81/79,791.80 = 35,145/x
  3. Step 3: Cross multiply
    57,810.81x = 79,791.80 × 35,145
  4. Step 4: Simplify right side
    57,810.81x = 2,804,282,635.28
  5. Step 5: Solve for x
    x = 2,804,282,635.28/57,810.81
  6. Step 6: Final answer
    x = 48,507.93

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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.