Home / 56,721.50-85,072.91-21,173.49

Finding the Fourth Proportional to 56,721.50, 85,072.91 and 21,173.49

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Solution

The fourth proportional to 56,721.50, 85,072.91 and 21,173.49 is: 31,756.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,721.50 : 85,072.91 = 21,173.49 : x
  2. Step 2: Convert to fraction form
    56,721.50/85,072.91 = 21,173.49/x
  3. Step 3: Cross multiply
    56,721.50x = 85,072.91 × 21,173.49
  4. Step 4: Simplify right side
    56,721.50x = 1,801,290,409.16
  5. Step 5: Solve for x
    x = 1,801,290,409.16/56,721.50
  6. Step 6: Final answer
    x = 31,756.75

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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.