Home / 65,635.41-90,575.36-40,142.06

Finding the Fourth Proportional to 65,635.41, 90,575.36 and 40,142.06

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Solution

The fourth proportional to 65,635.41, 90,575.36 and 40,142.06 is: 55,395.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,635.41 : 90,575.36 = 40,142.06 : x
  2. Step 2: Convert to fraction form
    65,635.41/90,575.36 = 40,142.06/x
  3. Step 3: Cross multiply
    65,635.41x = 90,575.36 × 40,142.06
  4. Step 4: Simplify right side
    65,635.41x = 3,635,881,372.24
  5. Step 5: Solve for x
    x = 3,635,881,372.24/65,635.41
  6. Step 6: Final answer
    x = 55,395.12

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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.