Home / 65,720.34-90,638.19-55,560.92

Finding the Fourth Proportional to 65,720.34, 90,638.19 and 55,560.92

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Solution

The fourth proportional to 65,720.34, 90,638.19 and 55,560.92 is: 76,626.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,720.34 : 90,638.19 = 55,560.92 : x
  2. Step 2: Convert to fraction form
    65,720.34/90,638.19 = 55,560.92/x
  3. Step 3: Cross multiply
    65,720.34x = 90,638.19 × 55,560.92
  4. Step 4: Simplify right side
    65,720.34x = 5,035,940,770.34
  5. Step 5: Solve for x
    x = 5,035,940,770.34/65,720.34
  6. Step 6: Final answer
    x = 76,626.82

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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.