Home / 85,729.20-118,325.97-57,050.12

Finding the Fourth Proportional to 85,729.20, 118,325.97 and 57,050.12

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Solution

The fourth proportional to 85,729.20, 118,325.97 and 57,050.12 is: 78,742.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,729.20 : 118,325.97 = 57,050.12 : x
  2. Step 2: Convert to fraction form
    85,729.20/118,325.97 = 57,050.12/x
  3. Step 3: Cross multiply
    85,729.20x = 118,325.97 × 57,050.12
  4. Step 4: Simplify right side
    85,729.20x = 6,750,510,195.99
  5. Step 5: Solve for x
    x = 6,750,510,195.99/85,729.20
  6. Step 6: Final answer
    x = 78,742.25

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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.