Home / 81,799.80-122,408.10-56,722.20

Finding the Fourth Proportional to 81,799.80, 122,408.10 and 56,722.20

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Solution

The fourth proportional to 81,799.80, 122,408.10 and 56,722.20 is: 84,881.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,799.80 : 122,408.10 = 56,722.20 : x
  2. Step 2: Convert to fraction form
    81,799.80/122,408.10 = 56,722.20/x
  3. Step 3: Cross multiply
    81,799.80x = 122,408.10 × 56,722.20
  4. Step 4: Simplify right side
    81,799.80x = 6,943,256,729.82
  5. Step 5: Solve for x
    x = 6,943,256,729.82/81,799.80
  6. Step 6: Final answer
    x = 84,881.10

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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.