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Finding the Fourth Proportional to 55,208.77, 82,837.77 and 20,140.23

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Solution

The fourth proportional to 55,208.77, 82,837.77 and 20,140.23 is: 30,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,208.77 : 82,837.77 = 20,140.23 : x
  2. Step 2: Convert to fraction form
    55,208.77/82,837.77 = 20,140.23/x
  3. Step 3: Cross multiply
    55,208.77x = 82,837.77 × 20,140.23
  4. Step 4: Simplify right side
    55,208.77x = 1,668,371,740.49
  5. Step 5: Solve for x
    x = 1,668,371,740.49/55,208.77
  6. Step 6: Final answer
    x = 30,219.32

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1.5x scale

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.