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Finding the Fourth Proportional to 76,692.60, 115,125.30 and 59,239.80

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Solution

The fourth proportional to 76,692.60, 115,125.30 and 59,239.80 is: 88,926.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,692.60 : 115,125.30 = 59,239.80 : x
  2. Step 2: Convert to fraction form
    76,692.60/115,125.30 = 59,239.80/x
  3. Step 3: Cross multiply
    76,692.60x = 115,125.30 × 59,239.80
  4. Step 4: Simplify right side
    76,692.60x = 6,819,999,746.94
  5. Step 5: Solve for x
    x = 6,819,999,746.94/76,692.60
  6. Step 6: Final answer
    x = 88,926.44

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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.