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Finding the Fourth Proportional to 55,657.80, 76,813.11 and 31,786.29

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Solution

The fourth proportional to 55,657.80, 76,813.11 and 31,786.29 is: 43,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,657.80 : 76,813.11 = 31,786.29 : x
  2. Step 2: Convert to fraction form
    55,657.80/76,813.11 = 31,786.29/x
  3. Step 3: Cross multiply
    55,657.80x = 76,813.11 × 31,786.29
  4. Step 4: Simplify right side
    55,657.80x = 2,441,603,790.26
  5. Step 5: Solve for x
    x = 2,441,603,790.26/55,657.80
  6. Step 6: Final answer
    x = 43,868.13

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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.