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Finding the Fourth Proportional to 86,602.37, 129,928.05 and 33,318.81

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Solution

The fourth proportional to 86,602.37, 129,928.05 and 33,318.81 is: 49,987.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,602.37 : 129,928.05 = 33,318.81 : x
  2. Step 2: Convert to fraction form
    86,602.37/129,928.05 = 33,318.81/x
  3. Step 3: Cross multiply
    86,602.37x = 129,928.05 × 33,318.81
  4. Step 4: Simplify right side
    86,602.37x = 4,329,048,011.62
  5. Step 5: Solve for x
    x = 4,329,048,011.62/86,602.37
  6. Step 6: Final answer
    x = 49,987.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.