Home / 55,421.53-76,481.79-31,548.21

Finding the Fourth Proportional to 55,421.53, 76,481.79 and 31,548.21

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Solution

The fourth proportional to 55,421.53, 76,481.79 and 31,548.21 is: 43,536.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,421.53 : 76,481.79 = 31,548.21 : x
  2. Step 2: Convert to fraction form
    55,421.53/76,481.79 = 31,548.21/x
  3. Step 3: Cross multiply
    55,421.53x = 76,481.79 × 31,548.21
  4. Step 4: Simplify right side
    55,421.53x = 2,412,863,572.10
  5. Step 5: Solve for x
    x = 2,412,863,572.10/55,421.53
  6. Step 6: Final answer
    x = 43,536.57

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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.