Home / 81,985.68-122,822.96-48,635.28

Finding the Fourth Proportional to 81,985.68, 122,822.96 and 48,635.28

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Solution

The fourth proportional to 81,985.68, 122,822.96 and 48,635.28 is: 72,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.68 : 122,822.96 = 48,635.28 : x
  2. Step 2: Convert to fraction form
    81,985.68/122,822.96 = 48,635.28/x
  3. Step 3: Cross multiply
    81,985.68x = 122,822.96 × 48,635.28
  4. Step 4: Simplify right side
    81,985.68x = 5,973,529,050.03
  5. Step 5: Solve for x
    x = 5,973,529,050.03/81,985.68
  6. Step 6: Final answer
    x = 72,860.64

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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.