Home / 50,779.71-76,128.26-21,219.57

Finding the Fourth Proportional to 50,779.71, 76,128.26 and 21,219.57

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Solution

The fourth proportional to 50,779.71, 76,128.26 and 21,219.57 is: 31,812.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,779.71 : 76,128.26 = 21,219.57 : x
  2. Step 2: Convert to fraction form
    50,779.71/76,128.26 = 21,219.57/x
  3. Step 3: Cross multiply
    50,779.71x = 76,128.26 × 21,219.57
  4. Step 4: Simplify right side
    50,779.71x = 1,615,408,835.95
  5. Step 5: Solve for x
    x = 1,615,408,835.95/50,779.71
  6. Step 6: Final answer
    x = 31,812.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.