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Finding the Fourth Proportional to 45,839.84, 68,759.82 and 12,560.20

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Solution

The fourth proportional to 45,839.84, 68,759.82 and 12,560.20 is: 18,840.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,839.84 : 68,759.82 = 12,560.20 : x
  2. Step 2: Convert to fraction form
    45,839.84/68,759.82 = 12,560.20/x
  3. Step 3: Cross multiply
    45,839.84x = 68,759.82 × 12,560.20
  4. Step 4: Simplify right side
    45,839.84x = 863,637,091.16
  5. Step 5: Solve for x
    x = 863,637,091.16/45,839.84
  6. Step 6: Final answer
    x = 18,840.32

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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.