Home / 84,711.45-127,078.90-28,567.61

Finding the Fourth Proportional to 84,711.45, 127,078.90 and 28,567.61

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Solution

The fourth proportional to 84,711.45, 127,078.90 and 28,567.61 is: 42,855.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,711.45 : 127,078.90 = 28,567.61 : x
  2. Step 2: Convert to fraction form
    84,711.45/127,078.90 = 28,567.61/x
  3. Step 3: Cross multiply
    84,711.45x = 127,078.90 × 28,567.61
  4. Step 4: Simplify right side
    84,711.45x = 3,630,340,454.43
  5. Step 5: Solve for x
    x = 3,630,340,454.43/84,711.45
  6. Step 6: Final answer
    x = 42,855.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.