Home / 47,378.81-65,406.44-29,479.61

Finding the Fourth Proportional to 47,378.81, 65,406.44 and 29,479.61

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Solution

The fourth proportional to 47,378.81, 65,406.44 and 29,479.61 is: 40,696.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,378.81 : 65,406.44 = 29,479.61 : x
  2. Step 2: Convert to fraction form
    47,378.81/65,406.44 = 29,479.61/x
  3. Step 3: Cross multiply
    47,378.81x = 65,406.44 × 29,479.61
  4. Step 4: Simplify right side
    47,378.81x = 1,928,156,342.69
  5. Step 5: Solve for x
    x = 1,928,156,342.69/47,378.81
  6. Step 6: Final answer
    x = 40,696.60

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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.