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Finding the Fourth Proportional to 30,480.45, 42,062.07 and 17,051.94

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Solution

The fourth proportional to 30,480.45, 42,062.07 and 17,051.94 is: 23,531.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,480.45 : 42,062.07 = 17,051.94 : x
  2. Step 2: Convert to fraction form
    30,480.45/42,062.07 = 17,051.94/x
  3. Step 3: Cross multiply
    30,480.45x = 42,062.07 × 17,051.94
  4. Step 4: Simplify right side
    30,480.45x = 717,239,893.92
  5. Step 5: Solve for x
    x = 717,239,893.92/30,480.45
  6. Step 6: Final answer
    x = 23,531.15

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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.