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Finding the Fourth Proportional to 78,835, 108,794.60 and 43,027.30

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Solution

The fourth proportional to 78,835, 108,794.60 and 43,027.30 is: 59,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835 : 108,794.60 = 43,027.30 : x
  2. Step 2: Convert to fraction form
    78,835/108,794.60 = 43,027.30/x
  3. Step 3: Cross multiply
    78,835x = 108,794.60 × 43,027.30
  4. Step 4: Simplify right side
    78,835x = 4,681,137,892.58
  5. Step 5: Solve for x
    x = 4,681,137,892.58/78,835
  6. Step 6: Final answer
    x = 59,378.93

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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.