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Finding the Fourth Proportional to 57,969.32, 86,953.98 and 31,659.72

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Solution

The fourth proportional to 57,969.32, 86,953.98 and 31,659.72 is: 47,489.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,969.32 : 86,953.98 = 31,659.72 : x
  2. Step 2: Convert to fraction form
    57,969.32/86,953.98 = 31,659.72/x
  3. Step 3: Cross multiply
    57,969.32x = 86,953.98 × 31,659.72
  4. Step 4: Simplify right side
    57,969.32x = 2,752,938,659.69
  5. Step 5: Solve for x
    x = 2,752,938,659.69/57,969.32
  6. Step 6: Final answer
    x = 47,489.58

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.