Home / 76,478.15-105,578.22-47,813.73

Finding the Fourth Proportional to 76,478.15, 105,578.22 and 47,813.73

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Solution

The fourth proportional to 76,478.15, 105,578.22 and 47,813.73 is: 66,006.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,478.15 : 105,578.22 = 47,813.73 : x
  2. Step 2: Convert to fraction form
    76,478.15/105,578.22 = 47,813.73/x
  3. Step 3: Cross multiply
    76,478.15x = 105,578.22 × 47,813.73
  4. Step 4: Simplify right side
    76,478.15x = 5,048,088,504.96
  5. Step 5: Solve for x
    x = 5,048,088,504.96/76,478.15
  6. Step 6: Final answer
    x = 66,006.94

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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.