Home / 85,361.11-117,777.67-54,720.21

Finding the Fourth Proportional to 85,361.11, 117,777.67 and 54,720.21

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Solution

The fourth proportional to 85,361.11, 117,777.67 and 54,720.21 is: 75,500.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,361.11 : 117,777.67 = 54,720.21 : x
  2. Step 2: Convert to fraction form
    85,361.11/117,777.67 = 54,720.21/x
  3. Step 3: Cross multiply
    85,361.11x = 117,777.67 × 54,720.21
  4. Step 4: Simplify right side
    85,361.11x = 6,444,818,835.71
  5. Step 5: Solve for x
    x = 6,444,818,835.71/85,361.11
  6. Step 6: Final answer
    x = 75,500.64

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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.