Home / 55,638.72-76,739.55-38,642.99

Finding the Fourth Proportional to 55,638.72, 76,739.55 and 38,642.99

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Solution

The fourth proportional to 55,638.72, 76,739.55 and 38,642.99 is: 53,298.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,638.72 : 76,739.55 = 38,642.99 : x
  2. Step 2: Convert to fraction form
    55,638.72/76,739.55 = 38,642.99/x
  3. Step 3: Cross multiply
    55,638.72x = 76,739.55 × 38,642.99
  4. Step 4: Simplify right side
    55,638.72x = 2,965,445,279.56
  5. Step 5: Solve for x
    x = 2,965,445,279.56/55,638.72
  6. Step 6: Final answer
    x = 53,298.23

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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.