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Finding the Fourth Proportional to 45,880.40, 68,863.80 and 28,384.40

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Solution

The fourth proportional to 45,880.40, 68,863.80 and 28,384.40 is: 42,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,880.40 : 68,863.80 = 28,384.40 : x
  2. Step 2: Convert to fraction form
    45,880.40/68,863.80 = 28,384.40/x
  3. Step 3: Cross multiply
    45,880.40x = 68,863.80 × 28,384.40
  4. Step 4: Simplify right side
    45,880.40x = 1,954,657,644.72
  5. Step 5: Solve for x
    x = 1,954,657,644.72/45,880.40
  6. Step 6: Final answer
    x = 42,603.33

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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.