Home / 49,860.32-74,790.80-12,420.48

Finding the Fourth Proportional to 49,860.32, 74,790.80 and 12,420.48

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Solution

The fourth proportional to 49,860.32, 74,790.80 and 12,420.48 is: 18,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,860.32 : 74,790.80 = 12,420.48 : x
  2. Step 2: Convert to fraction form
    49,860.32/74,790.80 = 12,420.48/x
  3. Step 3: Cross multiply
    49,860.32x = 74,790.80 × 12,420.48
  4. Step 4: Simplify right side
    49,860.32x = 928,937,635.58
  5. Step 5: Solve for x
    x = 928,937,635.58/49,860.32
  6. Step 6: Final answer
    x = 18,630.80

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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.