Home / 57,133.52-78,839.88-31,979.60

Finding the Fourth Proportional to 57,133.52, 78,839.88 and 31,979.60

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Solution

The fourth proportional to 57,133.52, 78,839.88 and 31,979.60 is: 44,129.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,133.52 : 78,839.88 = 31,979.60 : x
  2. Step 2: Convert to fraction form
    57,133.52/78,839.88 = 31,979.60/x
  3. Step 3: Cross multiply
    57,133.52x = 78,839.88 × 31,979.60
  4. Step 4: Simplify right side
    57,133.52x = 2,521,267,826.45
  5. Step 5: Solve for x
    x = 2,521,267,826.45/57,133.52
  6. Step 6: Final answer
    x = 44,129.40

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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.