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Finding the Fourth Proportional to 77,811.40, 116,735.58 and 33,438.58

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Solution

The fourth proportional to 77,811.40, 116,735.58 and 33,438.58 is: 50,165.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,811.40 : 116,735.58 = 33,438.58 : x
  2. Step 2: Convert to fraction form
    77,811.40/116,735.58 = 33,438.58/x
  3. Step 3: Cross multiply
    77,811.40x = 116,735.58 × 33,438.58
  4. Step 4: Simplify right side
    77,811.40x = 3,903,472,030.68
  5. Step 5: Solve for x
    x = 3,903,472,030.68/77,811.40
  6. Step 6: Final answer
    x = 50,165.81

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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.