Home / 57,143.07-78,857.35-31,992.57

Finding the Fourth Proportional to 57,143.07, 78,857.35 and 31,992.57

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Solution

The fourth proportional to 57,143.07, 78,857.35 and 31,992.57 is: 44,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,143.07 : 78,857.35 = 31,992.57 : x
  2. Step 2: Convert to fraction form
    57,143.07/78,857.35 = 31,992.57/x
  3. Step 3: Cross multiply
    57,143.07x = 78,857.35 × 31,992.57
  4. Step 4: Simplify right side
    57,143.07x = 2,522,849,209.91
  5. Step 5: Solve for x
    x = 2,522,849,209.91/57,143.07
  6. Step 6: Final answer
    x = 44,149.70

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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.