Home / 76,221.88-105,386.82-66,763.32

Finding the Fourth Proportional to 76,221.88, 105,386.82 and 66,763.32

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Solution

The fourth proportional to 76,221.88, 105,386.82 and 66,763.32 is: 92,309.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,221.88 : 105,386.82 = 66,763.32 : x
  2. Step 2: Convert to fraction form
    76,221.88/105,386.82 = 66,763.32/x
  3. Step 3: Cross multiply
    76,221.88x = 105,386.82 × 66,763.32
  4. Step 4: Simplify right side
    76,221.88x = 7,035,973,987.44
  5. Step 5: Solve for x
    x = 7,035,973,987.44/76,221.88
  6. Step 6: Final answer
    x = 92,309.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.