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Finding the Fourth Proportional to 86,263.65, 129,318.52 and 33,660.90

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Solution

The fourth proportional to 86,263.65, 129,318.52 and 33,660.90 is: 50,461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,263.65 : 129,318.52 = 33,660.90 : x
  2. Step 2: Convert to fraction form
    86,263.65/129,318.52 = 33,660.90/x
  3. Step 3: Cross multiply
    86,263.65x = 129,318.52 × 33,660.90
  4. Step 4: Simplify right side
    86,263.65x = 4,352,977,769.87
  5. Step 5: Solve for x
    x = 4,352,977,769.87/86,263.65
  6. Step 6: Final answer
    x = 50,461.32

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1.5x scale

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.