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Finding the Fourth Proportional to 86,500.67, 119,193.80 and 63,803.70

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Solution

The fourth proportional to 86,500.67, 119,193.80 and 63,803.70 is: 87,918.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,500.67 : 119,193.80 = 63,803.70 : x
  2. Step 2: Convert to fraction form
    86,500.67/119,193.80 = 63,803.70/x
  3. Step 3: Cross multiply
    86,500.67x = 119,193.80 × 63,803.70
  4. Step 4: Simplify right side
    86,500.67x = 7,605,005,138.04
  5. Step 5: Solve for x
    x = 7,605,005,138.04/86,500.67
  6. Step 6: Final answer
    x = 87,918.46

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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.