Home / 57,005.28-78,659.52-31,856.40

Finding the Fourth Proportional to 57,005.28, 78,659.52 and 31,856.40

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Solution

The fourth proportional to 57,005.28, 78,659.52 and 31,856.40 is: 43,957.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,005.28 : 78,659.52 = 31,856.40 : x
  2. Step 2: Convert to fraction form
    57,005.28/78,659.52 = 31,856.40/x
  3. Step 3: Cross multiply
    57,005.28x = 78,659.52 × 31,856.40
  4. Step 4: Simplify right side
    57,005.28x = 2,505,809,132.93
  5. Step 5: Solve for x
    x = 2,505,809,132.93/57,005.28
  6. Step 6: Final answer
    x = 43,957.49

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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.