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Finding the Fourth Proportional to 66,718.40, 100,068.96 and 25,160

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Solution

The fourth proportional to 66,718.40, 100,068.96 and 25,160 is: 37,736.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,718.40 : 100,068.96 = 25,160 : x
  2. Step 2: Convert to fraction form
    66,718.40/100,068.96 = 25,160/x
  3. Step 3: Cross multiply
    66,718.40x = 100,068.96 × 25,160
  4. Step 4: Simplify right side
    66,718.40x = 2,517,735,033.60
  5. Step 5: Solve for x
    x = 2,517,735,033.60/66,718.40
  6. Step 6: Final answer
    x = 37,736.74

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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.