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Finding the Fourth Proportional to 57,507.78, 79,361.37 and 31,669.23

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Solution

The fourth proportional to 57,507.78, 79,361.37 and 31,669.23 is: 43,703.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,507.78 : 79,361.37 = 31,669.23 : x
  2. Step 2: Convert to fraction form
    57,507.78/79,361.37 = 31,669.23/x
  3. Step 3: Cross multiply
    57,507.78x = 79,361.37 × 31,669.23
  4. Step 4: Simplify right side
    57,507.78x = 2,513,313,479.65
  5. Step 5: Solve for x
    x = 2,513,313,479.65/57,507.78
  6. Step 6: Final answer
    x = 43,703.89

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1.5x scale

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.