Home / 49,376.40-74,064.60-12,440.40

Finding the Fourth Proportional to 49,376.40, 74,064.60 and 12,440.40

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Solution

The fourth proportional to 49,376.40, 74,064.60 and 12,440.40 is: 18,660.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,376.40 : 74,064.60 = 12,440.40 : x
  2. Step 2: Convert to fraction form
    49,376.40/74,064.60 = 12,440.40/x
  3. Step 3: Cross multiply
    49,376.40x = 74,064.60 × 12,440.40
  4. Step 4: Simplify right side
    49,376.40x = 921,393,249.84
  5. Step 5: Solve for x
    x = 921,393,249.84/49,376.40
  6. Step 6: Final answer
    x = 18,660.60

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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.