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Finding the Fourth Proportional to 77,647.80, 116,499.03 and 38,232.60

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Solution

The fourth proportional to 77,647.80, 116,499.03 and 38,232.60 is: 57,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,647.80 : 116,499.03 = 38,232.60 : x
  2. Step 2: Convert to fraction form
    77,647.80/116,499.03 = 38,232.60/x
  3. Step 3: Cross multiply
    77,647.80x = 116,499.03 × 38,232.60
  4. Step 4: Simplify right side
    77,647.80x = 4,454,060,814.38
  5. Step 5: Solve for x
    x = 4,454,060,814.38/77,647.80
  6. Step 6: Final answer
    x = 57,362.36

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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.