Home / 55,821.60-83,732.40-18,885.60

Finding the Fourth Proportional to 55,821.60, 83,732.40 and 18,885.60

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Solution

The fourth proportional to 55,821.60, 83,732.40 and 18,885.60 is: 28,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,821.60 : 83,732.40 = 18,885.60 : x
  2. Step 2: Convert to fraction form
    55,821.60/83,732.40 = 18,885.60/x
  3. Step 3: Cross multiply
    55,821.60x = 83,732.40 × 18,885.60
  4. Step 4: Simplify right side
    55,821.60x = 1,581,336,613.44
  5. Step 5: Solve for x
    x = 1,581,336,613.44/55,821.60
  6. Step 6: Final answer
    x = 28,328.40

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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.