Home / 55,123.53-82,636.75-21,866.95

Finding the Fourth Proportional to 55,123.53, 82,636.75 and 21,866.95

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Solution

The fourth proportional to 55,123.53, 82,636.75 and 21,866.95 is: 32,781.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,123.53 : 82,636.75 = 21,866.95 : x
  2. Step 2: Convert to fraction form
    55,123.53/82,636.75 = 21,866.95/x
  3. Step 3: Cross multiply
    55,123.53x = 82,636.75 × 21,866.95
  4. Step 4: Simplify right side
    55,123.53x = 1,807,013,680.41
  5. Step 5: Solve for x
    x = 1,807,013,680.41/55,123.53
  6. Step 6: Final answer
    x = 32,781.17

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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.