Home / 57,078.27-78,768.11-31,585.71

Finding the Fourth Proportional to 57,078.27, 78,768.11 and 31,585.71

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Solution

The fourth proportional to 57,078.27, 78,768.11 and 31,585.71 is: 43,588.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,078.27 : 78,768.11 = 31,585.71 : x
  2. Step 2: Convert to fraction form
    57,078.27/78,768.11 = 31,585.71/x
  3. Step 3: Cross multiply
    57,078.27x = 78,768.11 × 31,585.71
  4. Step 4: Simplify right side
    57,078.27x = 2,487,947,054.05
  5. Step 5: Solve for x
    x = 2,487,947,054.05/57,078.27
  6. Step 6: Final answer
    x = 43,588.34

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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.