Home / 47,929.55-66,147.69-28,815.54

Finding the Fourth Proportional to 47,929.55, 66,147.69 and 28,815.54

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Solution

The fourth proportional to 47,929.55, 66,147.69 and 28,815.54 is: 39,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,929.55 : 66,147.69 = 28,815.54 : x
  2. Step 2: Convert to fraction form
    47,929.55/66,147.69 = 28,815.54/x
  3. Step 3: Cross multiply
    47,929.55x = 66,147.69 × 28,815.54
  4. Step 4: Simplify right side
    47,929.55x = 1,906,081,407.10
  5. Step 5: Solve for x
    x = 1,906,081,407.10/47,929.55
  6. Step 6: Final answer
    x = 39,768.40

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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.