Home / 30,783,731.84-42,463,040.64-20,329,844.32

Finding the Fourth Proportional to 30,783,731.84, 42,463,040.64 and 20,329,844.32

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Solution

The fourth proportional to 30,783,731.84, 42,463,040.64 and 20,329,844.32 is: 28,042,961.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,783,731.84 : 42,463,040.64 = 20,329,844.32 : x
  2. Step 2: Convert to fraction form
    30,783,731.84/42,463,040.64 = 20,329,844.32/x
  3. Step 3: Cross multiply
    30,783,731.84x = 42,463,040.64 × 20,329,844.32
  4. Step 4: Simplify right side
    30,783,731.84x = 863,267,005,565,033.25
  5. Step 5: Solve for x
    x = 863,267,005,565,033.25/30,783,731.84
  6. Step 6: Final answer
    x = 28,042,961.46

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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.