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Finding the Fourth Proportional to 57,010.40, 85,515.56 and 15,457.40

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Solution

The fourth proportional to 57,010.40, 85,515.56 and 15,457.40 is: 23,186.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,010.40 : 85,515.56 = 15,457.40 : x
  2. Step 2: Convert to fraction form
    57,010.40/85,515.56 = 15,457.40/x
  3. Step 3: Cross multiply
    57,010.40x = 85,515.56 × 15,457.40
  4. Step 4: Simplify right side
    57,010.40x = 1,321,848,217.14
  5. Step 5: Solve for x
    x = 1,321,848,217.14/57,010.40
  6. Step 6: Final answer
    x = 23,186.09

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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.