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Finding the Fourth Proportional to 65,599.36, 90,520.56 and 38,371.44

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Solution

The fourth proportional to 65,599.36, 90,520.56 and 38,371.44 is: 52,948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,599.36 : 90,520.56 = 38,371.44 : x
  2. Step 2: Convert to fraction form
    65,599.36/90,520.56 = 38,371.44/x
  3. Step 3: Cross multiply
    65,599.36x = 90,520.56 × 38,371.44
  4. Step 4: Simplify right side
    65,599.36x = 3,473,404,236.81
  5. Step 5: Solve for x
    x = 3,473,404,236.81/65,599.36
  6. Step 6: Final answer
    x = 52,948.75

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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.