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Finding the Fourth Proportional to 55,463.81, 83,162.40 and 21,689.59

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Solution

The fourth proportional to 55,463.81, 83,162.40 and 21,689.59 is: 32,521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,463.81 : 83,162.40 = 21,689.59 : x
  2. Step 2: Convert to fraction form
    55,463.81/83,162.40 = 21,689.59/x
  3. Step 3: Cross multiply
    55,463.81x = 83,162.40 × 21,689.59
  4. Step 4: Simplify right side
    55,463.81x = 1,803,758,226.10
  5. Step 5: Solve for x
    x = 1,803,758,226.10/55,463.81
  6. Step 6: Final answer
    x = 32,521.36

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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.