Home / 56,720.50-85,071.41-21,172.49

Finding the Fourth Proportional to 56,720.50, 85,071.41 and 21,172.49

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Solution

The fourth proportional to 56,720.50, 85,071.41 and 21,172.49 is: 31,755.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,720.50 : 85,071.41 = 21,172.49 : x
  2. Step 2: Convert to fraction form
    56,720.50/85,071.41 = 21,172.49/x
  3. Step 3: Cross multiply
    56,720.50x = 85,071.41 × 21,172.49
  4. Step 4: Simplify right side
    56,720.50x = 1,801,173,563.80
  5. Step 5: Solve for x
    x = 1,801,173,563.80/56,720.50
  6. Step 6: Final answer
    x = 31,755.25

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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.