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Finding the Fourth Proportional to 70,336,053.60, 105,504,080.40 and 39,599,080.80

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Solution

The fourth proportional to 70,336,053.60, 105,504,080.40 and 39,599,080.80 is: 59,398,621.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,336,053.60 : 105,504,080.40 = 39,599,080.80 : x
  2. Step 2: Convert to fraction form
    70,336,053.60/105,504,080.40 = 39,599,080.80/x
  3. Step 3: Cross multiply
    70,336,053.60x = 105,504,080.40 × 39,599,080.80
  4. Step 4: Simplify right side
    70,336,053.60x = 4,177,864,604,489,296
  5. Step 5: Solve for x
    x = 4,177,864,604,489,296/70,336,053.60
  6. Step 6: Final answer
    x = 59,398,621.20

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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.