Home / 65,731.20-90,710.86-40,237.04

Finding the Fourth Proportional to 65,731.20, 90,710.86 and 40,237.04

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Solution

The fourth proportional to 65,731.20, 90,710.86 and 40,237.04 is: 55,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,731.20 : 90,710.86 = 40,237.04 : x
  2. Step 2: Convert to fraction form
    65,731.20/90,710.86 = 40,237.04/x
  3. Step 3: Cross multiply
    65,731.20x = 90,710.86 × 40,237.04
  4. Step 4: Simplify right side
    65,731.20x = 3,649,936,502.25
  5. Step 5: Solve for x
    x = 3,649,936,502.25/65,731.20
  6. Step 6: Final answer
    x = 55,528.22

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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.