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Finding the Fourth Proportional to 60,719.58, 91,051.11 and 20,727.72

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Solution

The fourth proportional to 60,719.58, 91,051.11 and 20,727.72 is: 31,081.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,719.58 : 91,051.11 = 20,727.72 : x
  2. Step 2: Convert to fraction form
    60,719.58/91,051.11 = 20,727.72/x
  3. Step 3: Cross multiply
    60,719.58x = 91,051.11 × 20,727.72
  4. Step 4: Simplify right side
    60,719.58x = 1,887,281,913.77
  5. Step 5: Solve for x
    x = 1,887,281,913.77/60,719.58
  6. Step 6: Final answer
    x = 31,081.93

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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.