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Finding the Fourth Proportional to 65,812.08, 90,820.52 and 36,004.08

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Solution

The fourth proportional to 65,812.08, 90,820.52 and 36,004.08 is: 49,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,812.08 : 90,820.52 = 36,004.08 : x
  2. Step 2: Convert to fraction form
    65,812.08/90,820.52 = 36,004.08/x
  3. Step 3: Cross multiply
    65,812.08x = 90,820.52 × 36,004.08
  4. Step 4: Simplify right side
    65,812.08x = 3,269,909,267.72
  5. Step 5: Solve for x
    x = 3,269,909,267.72/65,812.08
  6. Step 6: Final answer
    x = 49,685.55

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1.5x scale

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.