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Finding the Fourth Proportional to 30,307.34, 45,467.22 and 12,777.20

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Solution

The fourth proportional to 30,307.34, 45,467.22 and 12,777.20 is: 19,168.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,307.34 : 45,467.22 = 12,777.20 : x
  2. Step 2: Convert to fraction form
    30,307.34/45,467.22 = 12,777.20/x
  3. Step 3: Cross multiply
    30,307.34x = 45,467.22 × 12,777.20
  4. Step 4: Simplify right side
    30,307.34x = 580,943,763.38
  5. Step 5: Solve for x
    x = 580,943,763.38/30,307.34
  6. Step 6: Final answer
    x = 19,168.42

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.