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Finding the Fourth Proportional to 39,840,129.60, 59,760,194.40 and 39,840,129.60

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Solution

The fourth proportional to 39,840,129.60, 59,760,194.40 and 39,840,129.60 is: 59,760,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,840,129.60 : 59,760,194.40 = 39,840,129.60 : x
  2. Step 2: Convert to fraction form
    39,840,129.60/59,760,194.40 = 39,840,129.60/x
  3. Step 3: Cross multiply
    39,840,129.60x = 59,760,194.40 × 39,840,129.60
  4. Step 4: Simplify right side
    39,840,129.60x = 2,380,853,889,817,194.50
  5. Step 5: Solve for x
    x = 2,380,853,889,817,194.50/39,840,129.60
  6. Step 6: Final answer
    x = 59,760,194.40

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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.