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Finding the Fourth Proportional to 58,162.68, 87,244.02 and 18,719.79

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Solution

The fourth proportional to 58,162.68, 87,244.02 and 18,719.79 is: 28,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,162.68 : 87,244.02 = 18,719.79 : x
  2. Step 2: Convert to fraction form
    58,162.68/87,244.02 = 18,719.79/x
  3. Step 3: Cross multiply
    58,162.68x = 87,244.02 × 18,719.79
  4. Step 4: Simplify right side
    58,162.68x = 1,633,189,733.16
  5. Step 5: Solve for x
    x = 1,633,189,733.16/58,162.68
  6. Step 6: Final answer
    x = 28,079.69

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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.