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Finding the Fourth Proportional to 57,659.70, 86,501.70 and 18,220.80

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Solution

The fourth proportional to 57,659.70, 86,501.70 and 18,220.80 is: 27,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,659.70 : 86,501.70 = 18,220.80 : x
  2. Step 2: Convert to fraction form
    57,659.70/86,501.70 = 18,220.80/x
  3. Step 3: Cross multiply
    57,659.70x = 86,501.70 × 18,220.80
  4. Step 4: Simplify right side
    57,659.70x = 1,576,130,175.36
  5. Step 5: Solve for x
    x = 1,576,130,175.36/57,659.70
  6. Step 6: Final answer
    x = 27,335.04

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1.5x scale

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.