Home / 55,128.60-82,717.20-25,531.20

Finding the Fourth Proportional to 55,128.60, 82,717.20 and 25,531.20

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Solution

The fourth proportional to 55,128.60, 82,717.20 and 25,531.20 is: 38,308.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.60 : 82,717.20 = 25,531.20 : x
  2. Step 2: Convert to fraction form
    55,128.60/82,717.20 = 25,531.20/x
  3. Step 3: Cross multiply
    55,128.60x = 82,717.20 × 25,531.20
  4. Step 4: Simplify right side
    55,128.60x = 2,111,869,376.64
  5. Step 5: Solve for x
    x = 2,111,869,376.64/55,128.60
  6. Step 6: Final answer
    x = 38,308.05

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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.