Home / 84,808.20-117,072.18-55,009.80

Finding the Fourth Proportional to 84,808.20, 117,072.18 and 55,009.80

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Solution

The fourth proportional to 84,808.20, 117,072.18 and 55,009.80 is: 75,937.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,808.20 : 117,072.18 = 55,009.80 : x
  2. Step 2: Convert to fraction form
    84,808.20/117,072.18 = 55,009.80/x
  3. Step 3: Cross multiply
    84,808.20x = 117,072.18 × 55,009.80
  4. Step 4: Simplify right side
    84,808.20x = 6,440,117,207.36
  5. Step 5: Solve for x
    x = 6,440,117,207.36/84,808.20
  6. Step 6: Final answer
    x = 75,937.44

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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.