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Finding the Fourth Proportional to 77,900.94, 116,859.60 and 38,420.10

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Solution

The fourth proportional to 77,900.94, 116,859.60 and 38,420.10 is: 57,634.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,900.94 : 116,859.60 = 38,420.10 : x
  2. Step 2: Convert to fraction form
    77,900.94/116,859.60 = 38,420.10/x
  3. Step 3: Cross multiply
    77,900.94x = 116,859.60 × 38,420.10
  4. Step 4: Simplify right side
    77,900.94x = 4,489,757,517.96
  5. Step 5: Solve for x
    x = 4,489,757,517.96/77,900.94
  6. Step 6: Final answer
    x = 57,634.19

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1.5x scale

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.