Home / 51,285.78-70,774.44-28,315.62

Finding the Fourth Proportional to 51,285.78, 70,774.44 and 28,315.62

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Solution

The fourth proportional to 51,285.78, 70,774.44 and 28,315.62 is: 39,075.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,285.78 : 70,774.44 = 28,315.62 : x
  2. Step 2: Convert to fraction form
    51,285.78/70,774.44 = 28,315.62/x
  3. Step 3: Cross multiply
    51,285.78x = 70,774.44 × 28,315.62
  4. Step 4: Simplify right side
    51,285.78x = 2,004,022,148.75
  5. Step 5: Solve for x
    x = 2,004,022,148.75/51,285.78
  6. Step 6: Final answer
    x = 39,075.59

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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.