Home / 85,518.21-118,057.20-53,704.65

Finding the Fourth Proportional to 85,518.21, 118,057.20 and 53,704.65

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Solution

The fourth proportional to 85,518.21, 118,057.20 and 53,704.65 is: 74,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,518.21 : 118,057.20 = 53,704.65 : x
  2. Step 2: Convert to fraction form
    85,518.21/118,057.20 = 53,704.65/x
  3. Step 3: Cross multiply
    85,518.21x = 118,057.20 × 53,704.65
  4. Step 4: Simplify right side
    85,518.21x = 6,340,220,605.98
  5. Step 5: Solve for x
    x = 6,340,220,605.98/85,518.21
  6. Step 6: Final answer
    x = 74,138.84

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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.