Home / 86,904,121.20-130,371,928.20-43,664,506.80

Finding the Fourth Proportional to 86,904,121.20, 130,371,928.20 and 43,664,506.80

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Solution

The fourth proportional to 86,904,121.20, 130,371,928.20 and 43,664,506.80 is: 65,504,671.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,904,121.20 : 130,371,928.20 = 43,664,506.80 : x
  2. Step 2: Convert to fraction form
    86,904,121.20/130,371,928.20 = 43,664,506.80/x
  3. Step 3: Cross multiply
    86,904,121.20x = 130,371,928.20 × 43,664,506.80
  4. Step 4: Simplify right side
    86,904,121.20x = 5,692,625,945,418,012
  5. Step 5: Solve for x
    x = 5,692,625,945,418,012/86,904,121.20
  6. Step 6: Final answer
    x = 65,504,671.89

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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.