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Finding the Fourth Proportional to 78,733.71, 108,652.86 and 50,455.80

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Solution

The fourth proportional to 78,733.71, 108,652.86 and 50,455.80 is: 69,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,733.71 : 108,652.86 = 50,455.80 : x
  2. Step 2: Convert to fraction form
    78,733.71/108,652.86 = 50,455.80/x
  3. Step 3: Cross multiply
    78,733.71x = 108,652.86 × 50,455.80
  4. Step 4: Simplify right side
    78,733.71x = 5,482,166,973.59
  5. Step 5: Solve for x
    x = 5,482,166,973.59/78,733.71
  6. Step 6: Final answer
    x = 69,629.22

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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.