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Finding the Fourth Proportional to 45,907.35, 68,853.08 and 12,619.50

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Solution

The fourth proportional to 45,907.35, 68,853.08 and 12,619.50 is: 18,927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,907.35 : 68,853.08 = 12,619.50 : x
  2. Step 2: Convert to fraction form
    45,907.35/68,853.08 = 12,619.50/x
  3. Step 3: Cross multiply
    45,907.35x = 68,853.08 × 12,619.50
  4. Step 4: Simplify right side
    45,907.35x = 868,891,643.25
  5. Step 5: Solve for x
    x = 868,891,643.25/45,907.35
  6. Step 6: Final answer
    x = 18,927.07

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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.