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Finding the Fourth Proportional to 65,825.96, 90,800.84 and 40,343.76

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Solution

The fourth proportional to 65,825.96, 90,800.84 and 40,343.76 is: 55,650.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,825.96 : 90,800.84 = 40,343.76 : x
  2. Step 2: Convert to fraction form
    65,825.96/90,800.84 = 40,343.76/x
  3. Step 3: Cross multiply
    65,825.96x = 90,800.84 × 40,343.76
  4. Step 4: Simplify right side
    65,825.96x = 3,663,247,095.04
  5. Step 5: Solve for x
    x = 3,663,247,095.04/65,825.96
  6. Step 6: Final answer
    x = 55,650.50

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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.