Home / 57,219.48-78,960.69-31,726.89

Finding the Fourth Proportional to 57,219.48, 78,960.69 and 31,726.89

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Solution

The fourth proportional to 57,219.48, 78,960.69 and 31,726.89 is: 43,781.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,219.48 : 78,960.69 = 31,726.89 : x
  2. Step 2: Convert to fraction form
    57,219.48/78,960.69 = 31,726.89/x
  3. Step 3: Cross multiply
    57,219.48x = 78,960.69 × 31,726.89
  4. Step 4: Simplify right side
    57,219.48x = 2,505,177,125.95
  5. Step 5: Solve for x
    x = 2,505,177,125.95/57,219.48
  6. Step 6: Final answer
    x = 43,781.89

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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.