Home / 66,320.48-99,450-21,939.04

Finding the Fourth Proportional to 66,320.48, 99,450 and 21,939.04

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Solution

The fourth proportional to 66,320.48, 99,450 and 21,939.04 is: 32,898.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,320.48 : 99,450 = 21,939.04 : x
  2. Step 2: Convert to fraction form
    66,320.48/99,450 = 21,939.04/x
  3. Step 3: Cross multiply
    66,320.48x = 99,450 × 21,939.04
  4. Step 4: Simplify right side
    66,320.48x = 2,181,837,528
  5. Step 5: Solve for x
    x = 2,181,837,528/66,320.48
  6. Step 6: Final answer
    x = 32,898.40

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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.