Home / 57,140.52-78,849.54-31,986.60

Finding the Fourth Proportional to 57,140.52, 78,849.54 and 31,986.60

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Solution

The fourth proportional to 57,140.52, 78,849.54 and 31,986.60 is: 44,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,140.52 : 78,849.54 = 31,986.60 : x
  2. Step 2: Convert to fraction form
    57,140.52/78,849.54 = 31,986.60/x
  3. Step 3: Cross multiply
    57,140.52x = 78,849.54 × 31,986.60
  4. Step 4: Simplify right side
    57,140.52x = 2,522,128,696.16
  5. Step 5: Solve for x
    x = 2,522,128,696.16/57,140.52
  6. Step 6: Final answer
    x = 44,139.06

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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.