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Finding the Fourth Proportional to 70,927.84, 106,392.84 and 21,012.94

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Solution

The fourth proportional to 70,927.84, 106,392.84 and 21,012.94 is: 31,519.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,927.84 : 106,392.84 = 21,012.94 : x
  2. Step 2: Convert to fraction form
    70,927.84/106,392.84 = 21,012.94/x
  3. Step 3: Cross multiply
    70,927.84x = 106,392.84 × 21,012.94
  4. Step 4: Simplify right side
    70,927.84x = 2,235,626,363.35
  5. Step 5: Solve for x
    x = 2,235,626,363.35/70,927.84
  6. Step 6: Final answer
    x = 31,519.73

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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.