Home / 57,121.76-78,784.48-37,967.20

Finding the Fourth Proportional to 57,121.76, 78,784.48 and 37,967.20

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Solution

The fourth proportional to 57,121.76, 78,784.48 and 37,967.20 is: 52,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.76 : 78,784.48 = 37,967.20 : x
  2. Step 2: Convert to fraction form
    57,121.76/78,784.48 = 37,967.20/x
  3. Step 3: Cross multiply
    57,121.76x = 78,784.48 × 37,967.20
  4. Step 4: Simplify right side
    57,121.76x = 2,991,226,109.06
  5. Step 5: Solve for x
    x = 2,991,226,109.06/57,121.76
  6. Step 6: Final answer
    x = 52,365.79

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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.