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Finding the Fourth Proportional to 70,992.07, 106,488 and 18,401.60

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Solution

The fourth proportional to 70,992.07, 106,488 and 18,401.60 is: 27,602.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,992.07 : 106,488 = 18,401.60 : x
  2. Step 2: Convert to fraction form
    70,992.07/106,488 = 18,401.60/x
  3. Step 3: Cross multiply
    70,992.07x = 106,488 × 18,401.60
  4. Step 4: Simplify right side
    70,992.07x = 1,959,549,847.02
  5. Step 5: Solve for x
    x = 1,959,549,847.02/70,992.07
  6. Step 6: Final answer
    x = 27,602.38

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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.