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Finding the Fourth Proportional to 78,679.58, 118,054.24 and 41,230.76

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Solution

The fourth proportional to 78,679.58, 118,054.24 and 41,230.76 is: 61,864.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,679.58 : 118,054.24 = 41,230.76 : x
  2. Step 2: Convert to fraction form
    78,679.58/118,054.24 = 41,230.76/x
  3. Step 3: Cross multiply
    78,679.58x = 118,054.24 × 41,230.76
  4. Step 4: Simplify right side
    78,679.58x = 4,867,465,343.07
  5. Step 5: Solve for x
    x = 4,867,465,343.07/78,679.58
  6. Step 6: Final answer
    x = 61,864.41

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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.