Home / 47,678.99-65,789.70-28,554.29

Finding the Fourth Proportional to 47,678.99, 65,789.70 and 28,554.29

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Solution

The fourth proportional to 47,678.99, 65,789.70 and 28,554.29 is: 39,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,678.99 : 65,789.70 = 28,554.29 : x
  2. Step 2: Convert to fraction form
    47,678.99/65,789.70 = 28,554.29/x
  3. Step 3: Cross multiply
    47,678.99x = 65,789.70 × 28,554.29
  4. Step 4: Simplify right side
    47,678.99x = 1,878,577,843.86
  5. Step 5: Solve for x
    x = 1,878,577,843.86/47,678.99
  6. Step 6: Final answer
    x = 39,400.54

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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.