Home / 42,941,872.32-64,363,570.08-21,328,169.28

Finding the Fourth Proportional to 42,941,872.32, 64,363,570.08 and 21,328,169.28

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Solution

The fourth proportional to 42,941,872.32, 64,363,570.08 and 21,328,169.28 is: 31,967,798.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,941,872.32 : 64,363,570.08 = 21,328,169.28 : x
  2. Step 2: Convert to fraction form
    42,941,872.32/64,363,570.08 = 21,328,169.28/x
  3. Step 3: Cross multiply
    42,941,872.32x = 64,363,570.08 × 21,328,169.28
  4. Step 4: Simplify right side
    42,941,872.32x = 1,372,757,118,131,383.25
  5. Step 5: Solve for x
    x = 1,372,757,118,131,383.25/42,941,872.32
  6. Step 6: Final answer
    x = 31,967,798.42

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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.