Home / 72,805.21-100,455.66-42,584.62

Finding the Fourth Proportional to 72,805.21, 100,455.66 and 42,584.62

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Solution

The fourth proportional to 72,805.21, 100,455.66 and 42,584.62 is: 58,757.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,805.21 : 100,455.66 = 42,584.62 : x
  2. Step 2: Convert to fraction form
    72,805.21/100,455.66 = 42,584.62/x
  3. Step 3: Cross multiply
    72,805.21x = 100,455.66 × 42,584.62
  4. Step 4: Simplify right side
    72,805.21x = 4,277,866,107.95
  5. Step 5: Solve for x
    x = 4,277,866,107.95/72,805.21
  6. Step 6: Final answer
    x = 58,757.69

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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.