Home / 57,709.72-86,555.88-18,261.70

Finding the Fourth Proportional to 57,709.72, 86,555.88 and 18,261.70

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Solution

The fourth proportional to 57,709.72, 86,555.88 and 18,261.70 is: 27,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,709.72 : 86,555.88 = 18,261.70 : x
  2. Step 2: Convert to fraction form
    57,709.72/86,555.88 = 18,261.70/x
  3. Step 3: Cross multiply
    57,709.72x = 86,555.88 × 18,261.70
  4. Step 4: Simplify right side
    57,709.72x = 1,580,657,513.80
  5. Step 5: Solve for x
    x = 1,580,657,513.80/57,709.72
  6. Step 6: Final answer
    x = 27,389.80

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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.