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Finding the Fourth Proportional to 84,706.40, 127,033.70 and 28,531.44

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Solution

The fourth proportional to 84,706.40, 127,033.70 and 28,531.44 is: 42,788.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,706.40 : 127,033.70 = 28,531.44 : x
  2. Step 2: Convert to fraction form
    84,706.40/127,033.70 = 28,531.44/x
  3. Step 3: Cross multiply
    84,706.40x = 127,033.70 × 28,531.44
  4. Step 4: Simplify right side
    84,706.40x = 3,624,454,246.87
  5. Step 5: Solve for x
    x = 3,624,454,246.87/84,706.40
  6. Step 6: Final answer
    x = 42,788.44

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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.