Home / 57,009.55-78,672.64-31,516.57

Finding the Fourth Proportional to 57,009.55, 78,672.64 and 31,516.57

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Solution

The fourth proportional to 57,009.55, 78,672.64 and 31,516.57 is: 43,492.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,009.55 : 78,672.64 = 31,516.57 : x
  2. Step 2: Convert to fraction form
    57,009.55/78,672.64 = 31,516.57/x
  3. Step 3: Cross multiply
    57,009.55x = 78,672.64 × 31,516.57
  4. Step 4: Simplify right side
    57,009.55x = 2,479,491,549.27
  5. Step 5: Solve for x
    x = 2,479,491,549.27/57,009.55
  6. Step 6: Final answer
    x = 43,492.57

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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.