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Finding the Fourth Proportional to 84,783.31, 127,299.80 and 47,416.59

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Solution

The fourth proportional to 84,783.31, 127,299.80 and 47,416.59 is: 71,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,783.31 : 127,299.80 = 47,416.59 : x
  2. Step 2: Convert to fraction form
    84,783.31/127,299.80 = 47,416.59/x
  3. Step 3: Cross multiply
    84,783.31x = 127,299.80 × 47,416.59
  4. Step 4: Simplify right side
    84,783.31x = 6,036,122,542.22
  5. Step 5: Solve for x
    x = 6,036,122,542.22/84,783.31
  6. Step 6: Final answer
    x = 71,194.70

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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.