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Finding the Fourth Proportional to 65,760.89, 90,728.25 and 37,076.96

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Solution

The fourth proportional to 65,760.89, 90,728.25 and 37,076.96 is: 51,153.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,760.89 : 90,728.25 = 37,076.96 : x
  2. Step 2: Convert to fraction form
    65,760.89/90,728.25 = 37,076.96/x
  3. Step 3: Cross multiply
    65,760.89x = 90,728.25 × 37,076.96
  4. Step 4: Simplify right side
    65,760.89x = 3,363,927,242.48
  5. Step 5: Solve for x
    x = 3,363,927,242.48/65,760.89
  6. Step 6: Final answer
    x = 51,153.92

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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.