Home / 81,985.58-122,700.60-50,415.64

Finding the Fourth Proportional to 81,985.58, 122,700.60 and 50,415.64

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Solution

The fourth proportional to 81,985.58, 122,700.60 and 50,415.64 is: 75,452.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.58 : 122,700.60 = 50,415.64 : x
  2. Step 2: Convert to fraction form
    81,985.58/122,700.60 = 50,415.64/x
  3. Step 3: Cross multiply
    81,985.58x = 122,700.60 × 50,415.64
  4. Step 4: Simplify right side
    81,985.58x = 6,186,028,970.63
  5. Step 5: Solve for x
    x = 6,186,028,970.63/81,985.58
  6. Step 6: Final answer
    x = 75,452.64

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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.