Home / 55,412.10-76,442.13-40,281.30

Finding the Fourth Proportional to 55,412.10, 76,442.13 and 40,281.30

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Solution

The fourth proportional to 55,412.10, 76,442.13 and 40,281.30 is: 55,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,412.10 : 76,442.13 = 40,281.30 : x
  2. Step 2: Convert to fraction form
    55,412.10/76,442.13 = 40,281.30/x
  3. Step 3: Cross multiply
    55,412.10x = 76,442.13 × 40,281.30
  4. Step 4: Simplify right side
    55,412.10x = 3,079,188,371.17
  5. Step 5: Solve for x
    x = 3,079,188,371.17/55,412.10
  6. Step 6: Final answer
    x = 55,568.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.