Home / 49,386.40-74,079.60-12,450.40

Finding the Fourth Proportional to 49,386.40, 74,079.60 and 12,450.40

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Solution

The fourth proportional to 49,386.40, 74,079.60 and 12,450.40 is: 18,675.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,386.40 : 74,079.60 = 12,450.40 : x
  2. Step 2: Convert to fraction form
    49,386.40/74,079.60 = 12,450.40/x
  3. Step 3: Cross multiply
    49,386.40x = 74,079.60 × 12,450.40
  4. Step 4: Simplify right side
    49,386.40x = 922,320,651.84
  5. Step 5: Solve for x
    x = 922,320,651.84/49,386.40
  6. Step 6: Final answer
    x = 18,675.60

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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.