Home / 65,825.45-90,800.15-40,343.25

Finding the Fourth Proportional to 65,825.45, 90,800.15 and 40,343.25

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Solution

The fourth proportional to 65,825.45, 90,800.15 and 40,343.25 is: 55,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,825.45 : 90,800.15 = 40,343.25 : x
  2. Step 2: Convert to fraction form
    65,825.45/90,800.15 = 40,343.25/x
  3. Step 3: Cross multiply
    65,825.45x = 90,800.15 × 40,343.25
  4. Step 4: Simplify right side
    65,825.45x = 3,663,173,151.49
  5. Step 5: Solve for x
    x = 3,663,173,151.49/65,825.45
  6. Step 6: Final answer
    x = 55,649.80

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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.