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Finding the Fourth Proportional to 65,371.32, 90,102.78 and 50,052.60

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Solution

The fourth proportional to 65,371.32, 90,102.78 and 50,052.60 is: 68,988.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,371.32 : 90,102.78 = 50,052.60 : x
  2. Step 2: Convert to fraction form
    65,371.32/90,102.78 = 50,052.60/x
  3. Step 3: Cross multiply
    65,371.32x = 90,102.78 × 50,052.60
  4. Step 4: Simplify right side
    65,371.32x = 4,509,878,406.23
  5. Step 5: Solve for x
    x = 4,509,878,406.23/65,371.32
  6. Step 6: Final answer
    x = 68,988.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.