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Finding the Fourth Proportional to 85,520.67, 118,025.67 and 56,789.56

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Solution

The fourth proportional to 85,520.67, 118,025.67 and 56,789.56 is: 78,374.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520.67 : 118,025.67 = 56,789.56 : x
  2. Step 2: Convert to fraction form
    85,520.67/118,025.67 = 56,789.56/x
  3. Step 3: Cross multiply
    85,520.67x = 118,025.67 × 56,789.56
  4. Step 4: Simplify right side
    85,520.67x = 6,702,625,868.01
  5. Step 5: Solve for x
    x = 6,702,625,868.01/85,520.67
  6. Step 6: Final answer
    x = 78,374.34

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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.