Home / 57,116.32-78,817.96-31,620.90

Finding the Fourth Proportional to 57,116.32, 78,817.96 and 31,620.90

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Solution

The fourth proportional to 57,116.32, 78,817.96 and 31,620.90 is: 43,635.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,116.32 : 78,817.96 = 31,620.90 : x
  2. Step 2: Convert to fraction form
    57,116.32/78,817.96 = 31,620.90/x
  3. Step 3: Cross multiply
    57,116.32x = 78,817.96 × 31,620.90
  4. Step 4: Simplify right side
    57,116.32x = 2,492,294,723.11
  5. Step 5: Solve for x
    x = 2,492,294,723.11/57,116.32
  6. Step 6: Final answer
    x = 43,635.42

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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.