Home / 81,985.01-122,699.76-50,415.07

Finding the Fourth Proportional to 81,985.01, 122,699.76 and 50,415.07

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Solution

The fourth proportional to 81,985.01, 122,699.76 and 50,415.07 is: 75,451.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,985.01 : 122,699.76 = 50,415.07 : x
  2. Step 2: Convert to fraction form
    81,985.01/122,699.76 = 50,415.07/x
  3. Step 3: Cross multiply
    81,985.01x = 122,699.76 × 50,415.07
  4. Step 4: Simplify right side
    81,985.01x = 6,185,916,989.38
  5. Step 5: Solve for x
    x = 6,185,916,989.38/81,985.01
  6. Step 6: Final answer
    x = 75,451.81

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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.