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Finding the Fourth Proportional to 30,342.78, 45,484.79 and 11,608.40

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Solution

The fourth proportional to 30,342.78, 45,484.79 and 11,608.40 is: 17,401.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.78 : 45,484.79 = 11,608.40 : x
  2. Step 2: Convert to fraction form
    30,342.78/45,484.79 = 11,608.40/x
  3. Step 3: Cross multiply
    30,342.78x = 45,484.79 × 11,608.40
  4. Step 4: Simplify right side
    30,342.78x = 528,005,350.77
  5. Step 5: Solve for x
    x = 528,005,350.77/30,342.78
  6. Step 6: Final answer
    x = 17,401.35

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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.