Home / 65,624.34-90,568.39-40,147.68

Finding the Fourth Proportional to 65,624.34, 90,568.39 and 40,147.68

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Solution

The fourth proportional to 65,624.34, 90,568.39 and 40,147.68 is: 55,407.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,624.34 : 90,568.39 = 40,147.68 : x
  2. Step 2: Convert to fraction form
    65,624.34/90,568.39 = 40,147.68/x
  3. Step 3: Cross multiply
    65,624.34x = 90,568.39 × 40,147.68
  4. Step 4: Simplify right side
    65,624.34x = 3,636,110,739.84
  5. Step 5: Solve for x
    x = 3,636,110,739.84/65,624.34
  6. Step 6: Final answer
    x = 55,407.96

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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.