Home / 78,533.91-108,378.09-42,723.95

Finding the Fourth Proportional to 78,533.91, 108,378.09 and 42,723.95

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Solution

The fourth proportional to 78,533.91, 108,378.09 and 42,723.95 is: 58,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,533.91 : 108,378.09 = 42,723.95 : x
  2. Step 2: Convert to fraction form
    78,533.91/108,378.09 = 42,723.95/x
  3. Step 3: Cross multiply
    78,533.91x = 108,378.09 × 42,723.95
  4. Step 4: Simplify right side
    78,533.91x = 4,630,339,556.37
  5. Step 5: Solve for x
    x = 4,630,339,556.37/78,533.91
  6. Step 6: Final answer
    x = 58,959.75

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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.