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Finding the Fourth Proportional to 45,915.81, 68,792.13 and 19,202.91

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Solution

The fourth proportional to 45,915.81, 68,792.13 and 19,202.91 is: 28,770.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,915.81 : 68,792.13 = 19,202.91 : x
  2. Step 2: Convert to fraction form
    45,915.81/68,792.13 = 19,202.91/x
  3. Step 3: Cross multiply
    45,915.81x = 68,792.13 × 19,202.91
  4. Step 4: Simplify right side
    45,915.81x = 1,321,009,081.10
  5. Step 5: Solve for x
    x = 1,321,009,081.10/45,915.81
  6. Step 6: Final answer
    x = 28,770.24

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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.