Home / 65,717.10-90,684.69-40,213.05

Finding the Fourth Proportional to 65,717.10, 90,684.69 and 40,213.05

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Solution

The fourth proportional to 65,717.10, 90,684.69 and 40,213.05 is: 55,491.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,717.10 : 90,684.69 = 40,213.05 : x
  2. Step 2: Convert to fraction form
    65,717.10/90,684.69 = 40,213.05/x
  3. Step 3: Cross multiply
    65,717.10x = 90,684.69 × 40,213.05
  4. Step 4: Simplify right side
    65,717.10x = 3,646,707,973.20
  5. Step 5: Solve for x
    x = 3,646,707,973.20/65,717.10
  6. Step 6: Final answer
    x = 55,491.01

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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.