Home / 30,785,696.82-42,481,367.16-20,842,351.50

Finding the Fourth Proportional to 30,785,696.82, 42,481,367.16 and 20,842,351.50

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Solution

The fourth proportional to 30,785,696.82, 42,481,367.16 and 20,842,351.50 is: 28,760,485.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,785,696.82 : 42,481,367.16 = 20,842,351.50 : x
  2. Step 2: Convert to fraction form
    30,785,696.82/42,481,367.16 = 20,842,351.50/x
  3. Step 3: Cross multiply
    30,785,696.82x = 42,481,367.16 × 20,842,351.50
  4. Step 4: Simplify right side
    30,785,696.82x = 885,411,586,549,276.62
  5. Step 5: Solve for x
    x = 885,411,586,549,276.62/30,785,696.82
  6. Step 6: Final answer
    x = 28,760,485.49

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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.