Home / 71,240.20-98,312.34-39,408.28

Finding the Fourth Proportional to 71,240.20, 98,312.34 and 39,408.28

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Solution

The fourth proportional to 71,240.20, 98,312.34 and 39,408.28 is: 54,383.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,240.20 : 98,312.34 = 39,408.28 : x
  2. Step 2: Convert to fraction form
    71,240.20/98,312.34 = 39,408.28/x
  3. Step 3: Cross multiply
    71,240.20x = 98,312.34 × 39,408.28
  4. Step 4: Simplify right side
    71,240.20x = 3,874,320,222.18
  5. Step 5: Solve for x
    x = 3,874,320,222.18/71,240.20
  6. Step 6: Final answer
    x = 54,383.90

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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.