Home / 55,154.64-82,702.80-20,091.36

Finding the Fourth Proportional to 55,154.64, 82,702.80 and 20,091.36

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Solution

The fourth proportional to 55,154.64, 82,702.80 and 20,091.36 is: 30,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,154.64 : 82,702.80 = 20,091.36 : x
  2. Step 2: Convert to fraction form
    55,154.64/82,702.80 = 20,091.36/x
  3. Step 3: Cross multiply
    55,154.64x = 82,702.80 × 20,091.36
  4. Step 4: Simplify right side
    55,154.64x = 1,661,611,727.81
  5. Step 5: Solve for x
    x = 1,661,611,727.81/55,154.64
  6. Step 6: Final answer
    x = 30,126.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.