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Finding the Fourth Proportional to 55,879.62, 77,050.89 and 40,745.58

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Solution

The fourth proportional to 55,879.62, 77,050.89 and 40,745.58 is: 56,182.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.62 : 77,050.89 = 40,745.58 : x
  2. Step 2: Convert to fraction form
    55,879.62/77,050.89 = 40,745.58/x
  3. Step 3: Cross multiply
    55,879.62x = 77,050.89 × 40,745.58
  4. Step 4: Simplify right side
    55,879.62x = 3,139,483,202.57
  5. Step 5: Solve for x
    x = 3,139,483,202.57/55,879.62
  6. Step 6: Final answer
    x = 56,182.97

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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.