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Finding the Fourth Proportional to 65,440.66, 90,297.54 and 36,758.96

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Solution

The fourth proportional to 65,440.66, 90,297.54 and 36,758.96 is: 50,721.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,440.66 : 90,297.54 = 36,758.96 : x
  2. Step 2: Convert to fraction form
    65,440.66/90,297.54 = 36,758.96/x
  3. Step 3: Cross multiply
    65,440.66x = 90,297.54 × 36,758.96
  4. Step 4: Simplify right side
    65,440.66x = 3,319,243,660.96
  5. Step 5: Solve for x
    x = 3,319,243,660.96/65,440.66
  6. Step 6: Final answer
    x = 50,721.43

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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.