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Finding the Fourth Proportional to 76,669.60, 115,090.80 and 59,216.80

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Solution

The fourth proportional to 76,669.60, 115,090.80 and 59,216.80 is: 88,891.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,669.60 : 115,090.80 = 59,216.80 : x
  2. Step 2: Convert to fraction form
    76,669.60/115,090.80 = 59,216.80/x
  3. Step 3: Cross multiply
    76,669.60x = 115,090.80 × 59,216.80
  4. Step 4: Simplify right side
    76,669.60x = 6,815,308,885.44
  5. Step 5: Solve for x
    x = 6,815,308,885.44/76,669.60
  6. Step 6: Final answer
    x = 88,891.93

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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.