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Finding the Fourth Proportional to 30,512.99, 42,103.50 and 17,081.77

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Solution

The fourth proportional to 30,512.99, 42,103.50 and 17,081.77 is: 23,570.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,512.99 : 42,103.50 = 17,081.77 : x
  2. Step 2: Convert to fraction form
    30,512.99/42,103.50 = 17,081.77/x
  3. Step 3: Cross multiply
    30,512.99x = 42,103.50 × 17,081.77
  4. Step 4: Simplify right side
    30,512.99x = 719,202,303.20
  5. Step 5: Solve for x
    x = 719,202,303.20/30,512.99
  6. Step 6: Final answer
    x = 23,570.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.