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Finding the Fourth Proportional to 67,653.78, 101,468.79 and 20,907.06

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Solution

The fourth proportional to 67,653.78, 101,468.79 and 20,907.06 is: 31,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,653.78 : 101,468.79 = 20,907.06 : x
  2. Step 2: Convert to fraction form
    67,653.78/101,468.79 = 20,907.06/x
  3. Step 3: Cross multiply
    67,653.78x = 101,468.79 × 20,907.06
  4. Step 4: Simplify right side
    67,653.78x = 2,121,414,080.66
  5. Step 5: Solve for x
    x = 2,121,414,080.66/67,653.78
  6. Step 6: Final answer
    x = 31,356.92

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1.5x scale

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.