Home / 57,128.58-85,701.06-17,688.78

Finding the Fourth Proportional to 57,128.58, 85,701.06 and 17,688.78

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Solution

The fourth proportional to 57,128.58, 85,701.06 and 17,688.78 is: 26,535.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,128.58 : 85,701.06 = 17,688.78 : x
  2. Step 2: Convert to fraction form
    57,128.58/85,701.06 = 17,688.78/x
  3. Step 3: Cross multiply
    57,128.58x = 85,701.06 × 17,688.78
  4. Step 4: Simplify right side
    57,128.58x = 1,515,947,196.11
  5. Step 5: Solve for x
    x = 1,515,947,196.11/57,128.58
  6. Step 6: Final answer
    x = 26,535.71

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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.