Home / 30,767,310.40-42,471,961.80-19,170,603.47

Finding the Fourth Proportional to 30,767,310.40, 42,471,961.80 and 19,170,603.47

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Solution

The fourth proportional to 30,767,310.40, 42,471,961.80 and 19,170,603.47 is: 26,463,578.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,767,310.40 : 42,471,961.80 = 19,170,603.47 : x
  2. Step 2: Convert to fraction form
    30,767,310.40/42,471,961.80 = 19,170,603.47/x
  3. Step 3: Cross multiply
    30,767,310.40x = 42,471,961.80 × 19,170,603.47
  4. Step 4: Simplify right side
    30,767,310.40x = 814,213,138,260,787.38
  5. Step 5: Solve for x
    x = 814,213,138,260,787.38/30,767,310.40
  6. Step 6: Final answer
    x = 26,463,578.64

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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.