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Finding the Fourth Proportional to 80,530.88, 120,768.98 and 30,598.98

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Solution

The fourth proportional to 80,530.88, 120,768.98 and 30,598.98 is: 45,888.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,530.88 : 120,768.98 = 30,598.98 : x
  2. Step 2: Convert to fraction form
    80,530.88/120,768.98 = 30,598.98/x
  3. Step 3: Cross multiply
    80,530.88x = 120,768.98 × 30,598.98
  4. Step 4: Simplify right side
    80,530.88x = 3,695,407,603.64
  5. Step 5: Solve for x
    x = 3,695,407,603.64/80,530.88
  6. Step 6: Final answer
    x = 45,888.08

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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.