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Finding the Fourth Proportional to 52,653.64, 78,994.30 and 18,923.06

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Solution

The fourth proportional to 52,653.64, 78,994.30 and 18,923.06 is: 28,389.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,653.64 : 78,994.30 = 18,923.06 : x
  2. Step 2: Convert to fraction form
    52,653.64/78,994.30 = 18,923.06/x
  3. Step 3: Cross multiply
    52,653.64x = 78,994.30 × 18,923.06
  4. Step 4: Simplify right side
    52,653.64x = 1,494,813,878.56
  5. Step 5: Solve for x
    x = 1,494,813,878.56/52,653.64
  6. Step 6: Final answer
    x = 28,389.57

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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.