Home / 76,619.22-114,928.85-21,215.22

Finding the Fourth Proportional to 76,619.22, 114,928.85 and 21,215.22

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Solution

The fourth proportional to 76,619.22, 114,928.85 and 21,215.22 is: 31,822.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,619.22 : 114,928.85 = 21,215.22 : x
  2. Step 2: Convert to fraction form
    76,619.22/114,928.85 = 21,215.22/x
  3. Step 3: Cross multiply
    76,619.22x = 114,928.85 × 21,215.22
  4. Step 4: Simplify right side
    76,619.22x = 2,438,240,837.10
  5. Step 5: Solve for x
    x = 2,438,240,837.10/76,619.22
  6. Step 6: Final answer
    x = 31,822.84

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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.