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Finding the Fourth Proportional to 65,136.36, 89,881.83 and 36,454.31

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Solution

The fourth proportional to 65,136.36, 89,881.83 and 36,454.31 is: 50,303.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,136.36 : 89,881.83 = 36,454.31 : x
  2. Step 2: Convert to fraction form
    65,136.36/89,881.83 = 36,454.31/x
  3. Step 3: Cross multiply
    65,136.36x = 89,881.83 × 36,454.31
  4. Step 4: Simplify right side
    65,136.36x = 3,276,580,136.62
  5. Step 5: Solve for x
    x = 3,276,580,136.62/65,136.36
  6. Step 6: Final answer
    x = 50,303.40

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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.