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Finding the Fourth Proportional to 89,791.80, 134,688.37 and 39,858.47

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Solution

The fourth proportional to 89,791.80, 134,688.37 and 39,858.47 is: 59,788.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,791.80 : 134,688.37 = 39,858.47 : x
  2. Step 2: Convert to fraction form
    89,791.80/134,688.37 = 39,858.47/x
  3. Step 3: Cross multiply
    89,791.80x = 134,688.37 × 39,858.47
  4. Step 4: Simplify right side
    89,791.80x = 5,368,472,354.99
  5. Step 5: Solve for x
    x = 5,368,472,354.99/89,791.80
  6. Step 6: Final answer
    x = 59,788.00

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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.