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Finding the Fourth Proportional to 65,270.16, 90,072.60 and 36,981.24

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Solution

The fourth proportional to 65,270.16, 90,072.60 and 36,981.24 is: 51,033.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,270.16 : 90,072.60 = 36,981.24 : x
  2. Step 2: Convert to fraction form
    65,270.16/90,072.60 = 36,981.24/x
  3. Step 3: Cross multiply
    65,270.16x = 90,072.60 × 36,981.24
  4. Step 4: Simplify right side
    65,270.16x = 3,330,996,438.02
  5. Step 5: Solve for x
    x = 3,330,996,438.02/65,270.16
  6. Step 6: Final answer
    x = 51,033.99

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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.