Home / 51,719.40-71,214.82-38,991.08

Finding the Fourth Proportional to 51,719.40, 71,214.82 and 38,991.08

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Solution

The fourth proportional to 51,719.40, 71,214.82 and 38,991.08 is: 53,688.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,719.40 : 71,214.82 = 38,991.08 : x
  2. Step 2: Convert to fraction form
    51,719.40/71,214.82 = 38,991.08/x
  3. Step 3: Cross multiply
    51,719.40x = 71,214.82 × 38,991.08
  4. Step 4: Simplify right side
    51,719.40x = 2,776,742,743.81
  5. Step 5: Solve for x
    x = 2,776,742,743.81/51,719.40
  6. Step 6: Final answer
    x = 53,688.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.