Home / 56,638.76-78,163.45-31,146.17

Finding the Fourth Proportional to 56,638.76, 78,163.45 and 31,146.17

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Solution

The fourth proportional to 56,638.76, 78,163.45 and 31,146.17 is: 42,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.76 : 78,163.45 = 31,146.17 : x
  2. Step 2: Convert to fraction form
    56,638.76/78,163.45 = 31,146.17/x
  3. Step 3: Cross multiply
    56,638.76x = 78,163.45 × 31,146.17
  4. Step 4: Simplify right side
    56,638.76x = 2,434,491,632.80
  5. Step 5: Solve for x
    x = 2,434,491,632.80/56,638.76
  6. Step 6: Final answer
    x = 42,982.79

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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.