Home / 43,085.26-64,638.22-20,872.68

Finding the Fourth Proportional to 43,085.26, 64,638.22 and 20,872.68

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Solution

The fourth proportional to 43,085.26, 64,638.22 and 20,872.68 is: 31,314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,085.26 : 64,638.22 = 20,872.68 : x
  2. Step 2: Convert to fraction form
    43,085.26/64,638.22 = 20,872.68/x
  3. Step 3: Cross multiply
    43,085.26x = 64,638.22 × 20,872.68
  4. Step 4: Simplify right side
    43,085.26x = 1,349,172,881.83
  5. Step 5: Solve for x
    x = 1,349,172,881.83/43,085.26
  6. Step 6: Final answer
    x = 31,314.02

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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.