Home / 71,638.37-98,856.15-39,372.29

Finding the Fourth Proportional to 71,638.37, 98,856.15 and 39,372.29

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Solution

The fourth proportional to 71,638.37, 98,856.15 and 39,372.29 is: 54,331.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,638.37 : 98,856.15 = 39,372.29 : x
  2. Step 2: Convert to fraction form
    71,638.37/98,856.15 = 39,372.29/x
  3. Step 3: Cross multiply
    71,638.37x = 98,856.15 × 39,372.29
  4. Step 4: Simplify right side
    71,638.37x = 3,892,192,734.87
  5. Step 5: Solve for x
    x = 3,892,192,734.87/71,638.37
  6. Step 6: Final answer
    x = 54,331.12

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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.