Home / 51,147.12-70,580.34-28,485.70

Finding the Fourth Proportional to 51,147.12, 70,580.34 and 28,485.70

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Solution

The fourth proportional to 51,147.12, 70,580.34 and 28,485.70 is: 39,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,147.12 : 70,580.34 = 28,485.70 : x
  2. Step 2: Convert to fraction form
    51,147.12/70,580.34 = 28,485.70/x
  3. Step 3: Cross multiply
    51,147.12x = 70,580.34 × 28,485.70
  4. Step 4: Simplify right side
    51,147.12x = 2,010,530,391.14
  5. Step 5: Solve for x
    x = 2,010,530,391.14/51,147.12
  6. Step 6: Final answer
    x = 39,308.77

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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.