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Finding the Fourth Proportional to 45,759.47, 68,623.10 and 13,728.98

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Solution

The fourth proportional to 45,759.47, 68,623.10 and 13,728.98 is: 20,588.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,759.47 : 68,623.10 = 13,728.98 : x
  2. Step 2: Convert to fraction form
    45,759.47/68,623.10 = 13,728.98/x
  3. Step 3: Cross multiply
    45,759.47x = 68,623.10 × 13,728.98
  4. Step 4: Simplify right side
    45,759.47x = 942,125,373.32
  5. Step 5: Solve for x
    x = 942,125,373.32/45,759.47
  6. Step 6: Final answer
    x = 20,588.64

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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.