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Finding the Fourth Proportional to 84,748.70, 127,248.60 and 47,383.40

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Solution

The fourth proportional to 84,748.70, 127,248.60 and 47,383.40 is: 71,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,748.70 : 127,248.60 = 47,383.40 : x
  2. Step 2: Convert to fraction form
    84,748.70/127,248.60 = 47,383.40/x
  3. Step 3: Cross multiply
    84,748.70x = 127,248.60 × 47,383.40
  4. Step 4: Simplify right side
    84,748.70x = 6,029,471,313.24
  5. Step 5: Solve for x
    x = 6,029,471,313.24/84,748.70
  6. Step 6: Final answer
    x = 71,145.30

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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.