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Finding the Fourth Proportional to 70,843.61, 106,266.33 and 20,924.43

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Solution

The fourth proportional to 70,843.61, 106,266.33 and 20,924.43 is: 31,386.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.61 : 106,266.33 = 20,924.43 : x
  2. Step 2: Convert to fraction form
    70,843.61/106,266.33 = 20,924.43/x
  3. Step 3: Cross multiply
    70,843.61x = 106,266.33 × 20,924.43
  4. Step 4: Simplify right side
    70,843.61x = 2,223,561,984.94
  5. Step 5: Solve for x
    x = 2,223,561,984.94/70,843.61
  6. Step 6: Final answer
    x = 31,386.91

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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.