Home / 81,635.12-122,173.08-56,703.28

Finding the Fourth Proportional to 81,635.12, 122,173.08 and 56,703.28

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Solution

The fourth proportional to 81,635.12, 122,173.08 and 56,703.28 is: 84,860.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,635.12 : 122,173.08 = 56,703.28 : x
  2. Step 2: Convert to fraction form
    81,635.12/122,173.08 = 56,703.28/x
  3. Step 3: Cross multiply
    81,635.12x = 122,173.08 × 56,703.28
  4. Step 4: Simplify right side
    81,635.12x = 6,927,614,363.70
  5. Step 5: Solve for x
    x = 6,927,614,363.70/81,635.12
  6. Step 6: Final answer
    x = 84,860.71

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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.