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Finding the Fourth Proportional to 65,856.33, 90,881.03 and 35,640.99

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Solution

The fourth proportional to 65,856.33, 90,881.03 and 35,640.99 is: 49,184.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,856.33 : 90,881.03 = 35,640.99 : x
  2. Step 2: Convert to fraction form
    65,856.33/90,881.03 = 35,640.99/x
  3. Step 3: Cross multiply
    65,856.33x = 90,881.03 × 35,640.99
  4. Step 4: Simplify right side
    65,856.33x = 3,239,089,703.21
  5. Step 5: Solve for x
    x = 3,239,089,703.21/65,856.33
  6. Step 6: Final answer
    x = 49,184.18

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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.