Home / 66,215.22-99,308.94-21,831.58

Finding the Fourth Proportional to 66,215.22, 99,308.94 and 21,831.58

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Solution

The fourth proportional to 66,215.22, 99,308.94 and 21,831.58 is: 32,742.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,215.22 : 99,308.94 = 21,831.58 : x
  2. Step 2: Convert to fraction form
    66,215.22/99,308.94 = 21,831.58/x
  3. Step 3: Cross multiply
    66,215.22x = 99,308.94 × 21,831.58
  4. Step 4: Simplify right side
    66,215.22x = 2,168,070,551.98
  5. Step 5: Solve for x
    x = 2,168,070,551.98/66,215.22
  6. Step 6: Final answer
    x = 32,742.78

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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.