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Finding the Fourth Proportional to 57,060.40, 85,655.40 and 30,751.60

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Solution

The fourth proportional to 57,060.40, 85,655.40 and 30,751.60 is: 46,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,060.40 : 85,655.40 = 30,751.60 : x
  2. Step 2: Convert to fraction form
    57,060.40/85,655.40 = 30,751.60/x
  3. Step 3: Cross multiply
    57,060.40x = 85,655.40 × 30,751.60
  4. Step 4: Simplify right side
    57,060.40x = 2,634,040,598.64
  5. Step 5: Solve for x
    x = 2,634,040,598.64/57,060.40
  6. Step 6: Final answer
    x = 46,162.32

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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.