Home / 66,086.28-99,144.81-21,712.86

Finding the Fourth Proportional to 66,086.28, 99,144.81 and 21,712.86

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Solution

The fourth proportional to 66,086.28, 99,144.81 and 21,712.86 is: 32,574.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.28 : 99,144.81 = 21,712.86 : x
  2. Step 2: Convert to fraction form
    66,086.28/99,144.81 = 21,712.86/x
  3. Step 3: Cross multiply
    66,086.28x = 99,144.81 × 21,712.86
  4. Step 4: Simplify right side
    66,086.28x = 2,152,717,379.26
  5. Step 5: Solve for x
    x = 2,152,717,379.26/66,086.28
  6. Step 6: Final answer
    x = 32,574.35

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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.