Home / 55,158.98-82,743.40-21,424.20

Finding the Fourth Proportional to 55,158.98, 82,743.40 and 21,424.20

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Solution

The fourth proportional to 55,158.98, 82,743.40 and 21,424.20 is: 32,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,158.98 : 82,743.40 = 21,424.20 : x
  2. Step 2: Convert to fraction form
    55,158.98/82,743.40 = 21,424.20/x
  3. Step 3: Cross multiply
    55,158.98x = 82,743.40 × 21,424.20
  4. Step 4: Simplify right side
    55,158.98x = 1,772,711,150.28
  5. Step 5: Solve for x
    x = 1,772,711,150.28/55,158.98
  6. Step 6: Final answer
    x = 32,138.21

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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.