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Finding the Fourth Proportional to 51,607.56, 77,445.84 and 18,775.56

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Solution

The fourth proportional to 51,607.56, 77,445.84 and 18,775.56 is: 28,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,607.56 : 77,445.84 = 18,775.56 : x
  2. Step 2: Convert to fraction form
    51,607.56/77,445.84 = 18,775.56/x
  3. Step 3: Cross multiply
    51,607.56x = 77,445.84 × 18,775.56
  4. Step 4: Simplify right side
    51,607.56x = 1,454,089,015.67
  5. Step 5: Solve for x
    x = 1,454,089,015.67/51,607.56
  6. Step 6: Final answer
    x = 28,175.89

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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.