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Finding the Fourth Proportional to 65,246.46, 90,035.85 and 38,383.78

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Solution

The fourth proportional to 65,246.46, 90,035.85 and 38,383.78 is: 52,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,246.46 : 90,035.85 = 38,383.78 : x
  2. Step 2: Convert to fraction form
    65,246.46/90,035.85 = 38,383.78/x
  3. Step 3: Cross multiply
    65,246.46x = 90,035.85 × 38,383.78
  4. Step 4: Simplify right side
    65,246.46x = 3,455,916,258.51
  5. Step 5: Solve for x
    x = 3,455,916,258.51/65,246.46
  6. Step 6: Final answer
    x = 52,967.11

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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.