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Finding the Fourth Proportional to 84,709.85, 127,076.52 and 28,566.05

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Solution

The fourth proportional to 84,709.85, 127,076.52 and 28,566.05 is: 42,853.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,709.85 : 127,076.52 = 28,566.05 : x
  2. Step 2: Convert to fraction form
    84,709.85/127,076.52 = 28,566.05/x
  3. Step 3: Cross multiply
    84,709.85x = 127,076.52 × 28,566.05
  4. Step 4: Simplify right side
    84,709.85x = 3,630,074,224.15
  5. Step 5: Solve for x
    x = 3,630,074,224.15/84,709.85
  6. Step 6: Final answer
    x = 42,853.04

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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.