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Finding the Fourth Proportional to 57,361.65, 79,160.09 and 31,870.35

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Solution

The fourth proportional to 57,361.65, 79,160.09 and 31,870.35 is: 43,981.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,361.65 : 79,160.09 = 31,870.35 : x
  2. Step 2: Convert to fraction form
    57,361.65/79,160.09 = 31,870.35/x
  3. Step 3: Cross multiply
    57,361.65x = 79,160.09 × 31,870.35
  4. Step 4: Simplify right side
    57,361.65x = 2,522,859,614.98
  5. Step 5: Solve for x
    x = 2,522,859,614.98/57,361.65
  6. Step 6: Final answer
    x = 43,981.64

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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.