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Finding the Fourth Proportional to 45,409.76, 68,039.04 and 15,811.28

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Solution

The fourth proportional to 45,409.76, 68,039.04 and 15,811.28 is: 23,690.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,409.76 : 68,039.04 = 15,811.28 : x
  2. Step 2: Convert to fraction form
    45,409.76/68,039.04 = 15,811.28/x
  3. Step 3: Cross multiply
    45,409.76x = 68,039.04 × 15,811.28
  4. Step 4: Simplify right side
    45,409.76x = 1,075,784,312.37
  5. Step 5: Solve for x
    x = 1,075,784,312.37/45,409.76
  6. Step 6: Final answer
    x = 23,690.60

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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.