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Finding the Fourth Proportional to 86,745.60, 119,703.15 and 49,017.42

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Solution

The fourth proportional to 86,745.60, 119,703.15 and 49,017.42 is: 67,640.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,745.60 : 119,703.15 = 49,017.42 : x
  2. Step 2: Convert to fraction form
    86,745.60/119,703.15 = 49,017.42/x
  3. Step 3: Cross multiply
    86,745.60x = 119,703.15 × 49,017.42
  4. Step 4: Simplify right side
    86,745.60x = 5,867,539,578.87
  5. Step 5: Solve for x
    x = 5,867,539,578.87/86,745.60
  6. Step 6: Final answer
    x = 67,640.77

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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.