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Finding the Fourth Proportional to 81,992.70, 113,158.00 and 47,999.13

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Solution

The fourth proportional to 81,992.70, 113,158.00 and 47,999.13 is: 66,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,992.70 : 113,158.00 = 47,999.13 : x
  2. Step 2: Convert to fraction form
    81,992.70/113,158.00 = 47,999.13/x
  3. Step 3: Cross multiply
    81,992.70x = 113,158.00 × 47,999.13
  4. Step 4: Simplify right side
    81,992.70x = 5,431,484,746.75
  5. Step 5: Solve for x
    x = 5,431,484,746.75/81,992.70
  6. Step 6: Final answer
    x = 66,243.52

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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.