Home / 65,763.32-90,731.96-40,243.05

Finding the Fourth Proportional to 65,763.32, 90,731.96 and 40,243.05

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Solution

The fourth proportional to 65,763.32, 90,731.96 and 40,243.05 is: 55,522.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,763.32 : 90,731.96 = 40,243.05 : x
  2. Step 2: Convert to fraction form
    65,763.32/90,731.96 = 40,243.05/x
  3. Step 3: Cross multiply
    65,763.32x = 90,731.96 × 40,243.05
  4. Step 4: Simplify right side
    65,763.32x = 3,651,330,752.57
  5. Step 5: Solve for x
    x = 3,651,330,752.57/65,763.32
  6. Step 6: Final answer
    x = 55,522.30

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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.