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Finding the Fourth Proportional to 76,704.75, 105,852.44 and 42,716.21

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Solution

The fourth proportional to 76,704.75, 105,852.44 and 42,716.21 is: 58,948.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,704.75 : 105,852.44 = 42,716.21 : x
  2. Step 2: Convert to fraction form
    76,704.75/105,852.44 = 42,716.21/x
  3. Step 3: Cross multiply
    76,704.75x = 105,852.44 × 42,716.21
  4. Step 4: Simplify right side
    76,704.75x = 4,521,615,315.35
  5. Step 5: Solve for x
    x = 4,521,615,315.35/76,704.75
  6. Step 6: Final answer
    x = 58,948.31

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1.5x scale

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.