Home / 57,782.56-86,705.82-28,200.64

Finding the Fourth Proportional to 57,782.56, 86,705.82 and 28,200.64

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Solution

The fourth proportional to 57,782.56, 86,705.82 and 28,200.64 is: 42,316.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,782.56 : 86,705.82 = 28,200.64 : x
  2. Step 2: Convert to fraction form
    57,782.56/86,705.82 = 28,200.64/x
  3. Step 3: Cross multiply
    57,782.56x = 86,705.82 × 28,200.64
  4. Step 4: Simplify right side
    57,782.56x = 2,445,159,615.72
  5. Step 5: Solve for x
    x = 2,445,159,615.72/57,782.56
  6. Step 6: Final answer
    x = 42,316.57

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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.