Home / 53,172.85-73,383.70-39,720.74

Finding the Fourth Proportional to 53,172.85, 73,383.70 and 39,720.74

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Solution

The fourth proportional to 53,172.85, 73,383.70 and 39,720.74 is: 54,818.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,172.85 : 73,383.70 = 39,720.74 : x
  2. Step 2: Convert to fraction form
    53,172.85/73,383.70 = 39,720.74/x
  3. Step 3: Cross multiply
    53,172.85x = 73,383.70 × 39,720.74
  4. Step 4: Simplify right side
    53,172.85x = 2,914,854,401.72
  5. Step 5: Solve for x
    x = 2,914,854,401.72/53,172.85
  6. Step 6: Final answer
    x = 54,818.47

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1.5x scale

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.