Home / 53,299-79,942.83-28,312.53

Finding the Fourth Proportional to 53,299, 79,942.83 and 28,312.53

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Solution

The fourth proportional to 53,299, 79,942.83 and 28,312.53 is: 42,465.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,299 : 79,942.83 = 28,312.53 : x
  2. Step 2: Convert to fraction form
    53,299/79,942.83 = 28,312.53/x
  3. Step 3: Cross multiply
    53,299x = 79,942.83 × 28,312.53
  4. Step 4: Simplify right side
    53,299x = 2,263,383,772.66
  5. Step 5: Solve for x
    x = 2,263,383,772.66/53,299
  6. Step 6: Final answer
    x = 42,465.78

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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.