Home / 90,913.75-125,579.23-69,271.56

Finding the Fourth Proportional to 90,913.75, 125,579.23 and 69,271.56

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Solution

The fourth proportional to 90,913.75, 125,579.23 and 69,271.56 is: 95,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,913.75 : 125,579.23 = 69,271.56 : x
  2. Step 2: Convert to fraction form
    90,913.75/125,579.23 = 69,271.56/x
  3. Step 3: Cross multiply
    90,913.75x = 125,579.23 × 69,271.56
  4. Step 4: Simplify right side
    90,913.75x = 8,699,068,992.52
  5. Step 5: Solve for x
    x = 8,699,068,992.52/90,913.75
  6. Step 6: Final answer
    x = 95,684.86

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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.