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Finding the Fourth Proportional to 57,803.76, 79,745.58 and 45,819

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Solution

The fourth proportional to 57,803.76, 79,745.58 and 45,819 is: 63,211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,803.76 : 79,745.58 = 45,819 : x
  2. Step 2: Convert to fraction form
    57,803.76/79,745.58 = 45,819/x
  3. Step 3: Cross multiply
    57,803.76x = 79,745.58 × 45,819
  4. Step 4: Simplify right side
    57,803.76x = 3,653,862,730.02
  5. Step 5: Solve for x
    x = 3,653,862,730.02/57,803.76
  6. Step 6: Final answer
    x = 63,211.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.