Home / 55,521.28-76,619.36-30,370.72

Finding the Fourth Proportional to 55,521.28, 76,619.36 and 30,370.72

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Solution

The fourth proportional to 55,521.28, 76,619.36 and 30,370.72 is: 41,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,521.28 : 76,619.36 = 30,370.72 : x
  2. Step 2: Convert to fraction form
    55,521.28/76,619.36 = 30,370.72/x
  3. Step 3: Cross multiply
    55,521.28x = 76,619.36 × 30,370.72
  4. Step 4: Simplify right side
    55,521.28x = 2,326,985,129.14
  5. Step 5: Solve for x
    x = 2,326,985,129.14/55,521.28
  6. Step 6: Final answer
    x = 41,911.59

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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.