Home / 57,210.91-78,952.98-31,715.76

Finding the Fourth Proportional to 57,210.91, 78,952.98 and 31,715.76

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Solution

The fourth proportional to 57,210.91, 78,952.98 and 31,715.76 is: 43,768.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,210.91 : 78,952.98 = 31,715.76 : x
  2. Step 2: Convert to fraction form
    57,210.91/78,952.98 = 31,715.76/x
  3. Step 3: Cross multiply
    57,210.91x = 78,952.98 × 31,715.76
  4. Step 4: Simplify right side
    57,210.91x = 2,504,053,319.33
  5. Step 5: Solve for x
    x = 2,504,053,319.33/57,210.91
  6. Step 6: Final answer
    x = 43,768.81

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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.