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Finding the Fourth Proportional to 65,712.29, 90,683.03 and 35,497.61

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Solution

The fourth proportional to 65,712.29, 90,683.03 and 35,497.61 is: 48,986.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.29 : 90,683.03 = 35,497.61 : x
  2. Step 2: Convert to fraction form
    65,712.29/90,683.03 = 35,497.61/x
  3. Step 3: Cross multiply
    65,712.29x = 90,683.03 × 35,497.61
  4. Step 4: Simplify right side
    65,712.29x = 3,219,030,201.66
  5. Step 5: Solve for x
    x = 3,219,030,201.66/65,712.29
  6. Step 6: Final answer
    x = 48,986.73

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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.