Home / 55,561.72-76,679.66-31,690.21

Finding the Fourth Proportional to 55,561.72, 76,679.66 and 31,690.21

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Solution

The fourth proportional to 55,561.72, 76,679.66 and 31,690.21 is: 43,735.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,561.72 : 76,679.66 = 31,690.21 : x
  2. Step 2: Convert to fraction form
    55,561.72/76,679.66 = 31,690.21/x
  3. Step 3: Cross multiply
    55,561.72x = 76,679.66 × 31,690.21
  4. Step 4: Simplify right side
    55,561.72x = 2,429,994,528.13
  5. Step 5: Solve for x
    x = 2,429,994,528.13/55,561.72
  6. Step 6: Final answer
    x = 43,735.05

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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.