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Finding the Fourth Proportional to 86,040.50, 118,754.87 and 47,813.17

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Solution

The fourth proportional to 86,040.50, 118,754.87 and 47,813.17 is: 65,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,040.50 : 118,754.87 = 47,813.17 : x
  2. Step 2: Convert to fraction form
    86,040.50/118,754.87 = 47,813.17/x
  3. Step 3: Cross multiply
    86,040.50x = 118,754.87 × 47,813.17
  4. Step 4: Simplify right side
    86,040.50x = 5,678,045,954.80
  5. Step 5: Solve for x
    x = 5,678,045,954.80/86,040.50
  6. Step 6: Final answer
    x = 65,992.71

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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.