Home / 86,908,729.20-130,378,840.20-43,669,114.80

Finding the Fourth Proportional to 86,908,729.20, 130,378,840.20 and 43,669,114.80

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Solution

The fourth proportional to 86,908,729.20, 130,378,840.20 and 43,669,114.80 is: 65,511,584.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908,729.20 : 130,378,840.20 = 43,669,114.80 : x
  2. Step 2: Convert to fraction form
    86,908,729.20/130,378,840.20 = 43,669,114.80/x
  3. Step 3: Cross multiply
    86,908,729.20x = 130,378,840.20 × 43,669,114.80
  4. Step 4: Simplify right side
    86,908,729.20x = 5,693,528,540,184,655
  5. Step 5: Solve for x
    x = 5,693,528,540,184,655/86,908,729.20
  6. Step 6: Final answer
    x = 65,511,584.31

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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.