Home / 65,731.18-90,727.61-38,883.02

Finding the Fourth Proportional to 65,731.18, 90,727.61 and 38,883.02

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Solution

The fourth proportional to 65,731.18, 90,727.61 and 38,883.02 is: 53,669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,731.18 : 90,727.61 = 38,883.02 : x
  2. Step 2: Convert to fraction form
    65,731.18/90,727.61 = 38,883.02/x
  3. Step 3: Cross multiply
    65,731.18x = 90,727.61 × 38,883.02
  4. Step 4: Simplify right side
    65,731.18x = 3,527,763,506.59
  5. Step 5: Solve for x
    x = 3,527,763,506.59/65,731.18
  6. Step 6: Final answer
    x = 53,669.56

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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.