Home / 57,968.40-87,010.20-28,419.60

Finding the Fourth Proportional to 57,968.40, 87,010.20 and 28,419.60

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Solution

The fourth proportional to 57,968.40, 87,010.20 and 28,419.60 is: 42,657.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,968.40 : 87,010.20 = 28,419.60 : x
  2. Step 2: Convert to fraction form
    57,968.40/87,010.20 = 28,419.60/x
  3. Step 3: Cross multiply
    57,968.40x = 87,010.20 × 28,419.60
  4. Step 4: Simplify right side
    57,968.40x = 2,472,795,079.92
  5. Step 5: Solve for x
    x = 2,472,795,079.92/57,968.40
  6. Step 6: Final answer
    x = 42,657.64

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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.