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Finding the Fourth Proportional to 61,960.40, 85,512.72 and 36,810

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Solution

The fourth proportional to 61,960.40, 85,512.72 and 36,810 is: 50,802.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,960.40 : 85,512.72 = 36,810 : x
  2. Step 2: Convert to fraction form
    61,960.40/85,512.72 = 36,810/x
  3. Step 3: Cross multiply
    61,960.40x = 85,512.72 × 36,810
  4. Step 4: Simplify right side
    61,960.40x = 3,147,723,223.20
  5. Step 5: Solve for x
    x = 3,147,723,223.20/61,960.40
  6. Step 6: Final answer
    x = 50,802.18

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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.