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Finding the Fourth Proportional to 65,270.66, 90,073.29 and 36,981.74

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Solution

The fourth proportional to 65,270.66, 90,073.29 and 36,981.74 is: 51,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,270.66 : 90,073.29 = 36,981.74 : x
  2. Step 2: Convert to fraction form
    65,270.66/90,073.29 = 36,981.74/x
  3. Step 3: Cross multiply
    65,270.66x = 90,073.29 × 36,981.74
  4. Step 4: Simplify right side
    65,270.66x = 3,331,066,991.72
  5. Step 5: Solve for x
    x = 3,331,066,991.72/65,270.66
  6. Step 6: Final answer
    x = 51,034.68

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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.