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Finding the Fourth Proportional to 78,571.64, 108,465.95 and 50,293.73

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Solution

The fourth proportional to 78,571.64, 108,465.95 and 50,293.73 is: 69,429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,571.64 : 108,465.95 = 50,293.73 : x
  2. Step 2: Convert to fraction form
    78,571.64/108,465.95 = 50,293.73/x
  3. Step 3: Cross multiply
    78,571.64x = 108,465.95 × 50,293.73
  4. Step 4: Simplify right side
    78,571.64x = 5,455,157,203.49
  5. Step 5: Solve for x
    x = 5,455,157,203.49/78,571.64
  6. Step 6: Final answer
    x = 69,429.09

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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.