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Finding the Fourth Proportional to 81,998.98, 113,152.89 and 48,458.50

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Solution

The fourth proportional to 81,998.98, 113,152.89 and 48,458.50 is: 66,869.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,998.98 : 113,152.89 = 48,458.50 : x
  2. Step 2: Convert to fraction form
    81,998.98/113,152.89 = 48,458.50/x
  3. Step 3: Cross multiply
    81,998.98x = 113,152.89 × 48,458.50
  4. Step 4: Simplify right side
    81,998.98x = 5,483,219,320.07
  5. Step 5: Solve for x
    x = 5,483,219,320.07/81,998.98
  6. Step 6: Final answer
    x = 66,869.36

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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.