Home / 57,111.40-78,812.04-31,618.90

Finding the Fourth Proportional to 57,111.40, 78,812.04 and 31,618.90

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Solution

The fourth proportional to 57,111.40, 78,812.04 and 31,618.90 is: 43,633.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,111.40 : 78,812.04 = 31,618.90 : x
  2. Step 2: Convert to fraction form
    57,111.40/78,812.04 = 31,618.90/x
  3. Step 3: Cross multiply
    57,111.40x = 78,812.04 × 31,618.90
  4. Step 4: Simplify right side
    57,111.40x = 2,491,950,011.56
  5. Step 5: Solve for x
    x = 2,491,950,011.56/57,111.40
  6. Step 6: Final answer
    x = 43,633.15

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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.