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Finding the Fourth Proportional to 51,758.96, 71,428.92 and 31,619.12

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Solution

The fourth proportional to 51,758.96, 71,428.92 and 31,619.12 is: 43,635.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,758.96 : 71,428.92 = 31,619.12 : x
  2. Step 2: Convert to fraction form
    51,758.96/71,428.92 = 31,619.12/x
  3. Step 3: Cross multiply
    51,758.96x = 71,428.92 × 31,619.12
  4. Step 4: Simplify right side
    51,758.96x = 2,258,519,592.95
  5. Step 5: Solve for x
    x = 2,258,519,592.95/51,758.96
  6. Step 6: Final answer
    x = 43,635.34

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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.