Home / 57,013.88-78,672.34-31,516.81

Finding the Fourth Proportional to 57,013.88, 78,672.34 and 31,516.81

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Solution

The fourth proportional to 57,013.88, 78,672.34 and 31,516.81 is: 43,489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,013.88 : 78,672.34 = 31,516.81 : x
  2. Step 2: Convert to fraction form
    57,013.88/78,672.34 = 31,516.81/x
  3. Step 3: Cross multiply
    57,013.88x = 78,672.34 × 31,516.81
  4. Step 4: Simplify right side
    57,013.88x = 2,479,501,192.04
  5. Step 5: Solve for x
    x = 2,479,501,192.04/57,013.88
  6. Step 6: Final answer
    x = 43,489.43

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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.