Home / 81,160.40-121,777.05-36,764.30

Finding the Fourth Proportional to 81,160.40, 121,777.05 and 36,764.30

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Solution

The fourth proportional to 81,160.40, 121,777.05 and 36,764.30 is: 55,162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160.40 : 121,777.05 = 36,764.30 : x
  2. Step 2: Convert to fraction form
    81,160.40/121,777.05 = 36,764.30/x
  3. Step 3: Cross multiply
    81,160.40x = 121,777.05 × 36,764.30
  4. Step 4: Simplify right side
    81,160.40x = 4,477,047,999.32
  5. Step 5: Solve for x
    x = 4,477,047,999.32/81,160.40
  6. Step 6: Final answer
    x = 55,162.96

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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.