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Finding the Fourth Proportional to 30,751.40, 46,127.10 and 28,029.80

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Solution

The fourth proportional to 30,751.40, 46,127.10 and 28,029.80 is: 42,044.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,751.40 : 46,127.10 = 28,029.80 : x
  2. Step 2: Convert to fraction form
    30,751.40/46,127.10 = 28,029.80/x
  3. Step 3: Cross multiply
    30,751.40x = 46,127.10 × 28,029.80
  4. Step 4: Simplify right side
    30,751.40x = 1,292,933,387.58
  5. Step 5: Solve for x
    x = 1,292,933,387.58/30,751.40
  6. Step 6: Final answer
    x = 42,044.70

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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.