Home / 81,068.34-121,614.66-28,468.56

Finding the Fourth Proportional to 81,068.34, 121,614.66 and 28,468.56

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Solution

The fourth proportional to 81,068.34, 121,614.66 and 28,468.56 is: 42,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,068.34 : 121,614.66 = 28,468.56 : x
  2. Step 2: Convert to fraction form
    81,068.34/121,614.66 = 28,468.56/x
  3. Step 3: Cross multiply
    81,068.34x = 121,614.66 × 28,468.56
  4. Step 4: Simplify right side
    81,068.34x = 3,462,194,245.09
  5. Step 5: Solve for x
    x = 3,462,194,245.09/81,068.34
  6. Step 6: Final answer
    x = 42,707.11

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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.