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Finding the Fourth Proportional to 55,863.68, 83,873.28 and 28,181.12

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Solution

The fourth proportional to 55,863.68, 83,873.28 and 28,181.12 is: 42,310.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,863.68 : 83,873.28 = 28,181.12 : x
  2. Step 2: Convert to fraction form
    55,863.68/83,873.28 = 28,181.12/x
  3. Step 3: Cross multiply
    55,863.68x = 83,873.28 × 28,181.12
  4. Step 4: Simplify right side
    55,863.68x = 2,363,642,968.47
  5. Step 5: Solve for x
    x = 2,363,642,968.47/55,863.68
  6. Step 6: Final answer
    x = 42,310.91

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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.