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Finding the Fourth Proportional to 68,915.64, 103,373.46 and 19,667.64

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Solution

The fourth proportional to 68,915.64, 103,373.46 and 19,667.64 is: 29,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,915.64 : 103,373.46 = 19,667.64 : x
  2. Step 2: Convert to fraction form
    68,915.64/103,373.46 = 19,667.64/x
  3. Step 3: Cross multiply
    68,915.64x = 103,373.46 × 19,667.64
  4. Step 4: Simplify right side
    68,915.64x = 2,033,111,996.83
  5. Step 5: Solve for x
    x = 2,033,111,996.83/68,915.64
  6. Step 6: Final answer
    x = 29,501.46

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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.