Home / 30,985,261.19-42,758,801.92-16,855,979.21

Finding the Fourth Proportional to 30,985,261.19, 42,758,801.92 and 16,855,979.21

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Solution

The fourth proportional to 30,985,261.19, 42,758,801.92 and 16,855,979.21 is: 23,260,784.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985,261.19 : 42,758,801.92 = 16,855,979.21 : x
  2. Step 2: Convert to fraction form
    30,985,261.19/42,758,801.92 = 16,855,979.21/x
  3. Step 3: Cross multiply
    30,985,261.19x = 42,758,801.92 × 16,855,979.21
  4. Step 4: Simplify right side
    30,985,261.19x = 720,741,475,909,954.12
  5. Step 5: Solve for x
    x = 720,741,475,909,954.12/30,985,261.19
  6. Step 6: Final answer
    x = 23,260,784.27

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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.