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Finding the Fourth Proportional to 43,435.32, 65,050.92 and 21,178.92

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Solution

The fourth proportional to 43,435.32, 65,050.92 and 21,178.92 is: 31,718.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,435.32 : 65,050.92 = 21,178.92 : x
  2. Step 2: Convert to fraction form
    43,435.32/65,050.92 = 21,178.92/x
  3. Step 3: Cross multiply
    43,435.32x = 65,050.92 × 21,178.92
  4. Step 4: Simplify right side
    43,435.32x = 1,377,708,230.61
  5. Step 5: Solve for x
    x = 1,377,708,230.61/43,435.32
  6. Step 6: Final answer
    x = 31,718.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.