Home / 57,216.29-78,966.65-31,728.32

Finding the Fourth Proportional to 57,216.29, 78,966.65 and 31,728.32

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Solution

The fourth proportional to 57,216.29, 78,966.65 and 31,728.32 is: 43,789.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,216.29 : 78,966.65 = 31,728.32 : x
  2. Step 2: Convert to fraction form
    57,216.29/78,966.65 = 31,728.32/x
  3. Step 3: Cross multiply
    57,216.29x = 78,966.65 × 31,728.32
  4. Step 4: Simplify right side
    57,216.29x = 2,505,478,587.05
  5. Step 5: Solve for x
    x = 2,505,478,587.05/57,216.29
  6. Step 6: Final answer
    x = 43,789.61

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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.