Home / 57,121.17-78,827.08-31,628.85

Finding the Fourth Proportional to 57,121.17, 78,827.08 and 31,628.85

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Solution

The fourth proportional to 57,121.17, 78,827.08 and 31,628.85 is: 43,647.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.17 : 78,827.08 = 31,628.85 : x
  2. Step 2: Convert to fraction form
    57,121.17/78,827.08 = 31,628.85/x
  3. Step 3: Cross multiply
    57,121.17x = 78,827.08 × 31,628.85
  4. Step 4: Simplify right side
    57,121.17x = 2,493,209,889.26
  5. Step 5: Solve for x
    x = 2,493,209,889.26/57,121.17
  6. Step 6: Final answer
    x = 43,647.74

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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.