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Finding the Fourth Proportional to 84,782.30, 127,231.05 and 47,342.30

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Solution

The fourth proportional to 84,782.30, 127,231.05 and 47,342.30 is: 71,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,782.30 : 127,231.05 = 47,342.30 : x
  2. Step 2: Convert to fraction form
    84,782.30/127,231.05 = 47,342.30/x
  3. Step 3: Cross multiply
    84,782.30x = 127,231.05 × 47,342.30
  4. Step 4: Simplify right side
    84,782.30x = 6,023,410,538.42
  5. Step 5: Solve for x
    x = 6,023,410,538.42/84,782.30
  6. Step 6: Final answer
    x = 71,045.61

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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.