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Finding the Fourth Proportional to 77,811.73, 116,530.50 and 44,430.64

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Solution

The fourth proportional to 77,811.73, 116,530.50 and 44,430.64 is: 66,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,811.73 : 116,530.50 = 44,430.64 : x
  2. Step 2: Convert to fraction form
    77,811.73/116,530.50 = 44,430.64/x
  3. Step 3: Cross multiply
    77,811.73x = 116,530.50 × 44,430.64
  4. Step 4: Simplify right side
    77,811.73x = 5,177,524,111.87
  5. Step 5: Solve for x
    x = 5,177,524,111.87/77,811.73
  6. Step 6: Final answer
    x = 66,539.13

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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.