Home / 86,729.64-130,112.84-30,567.48

Finding the Fourth Proportional to 86,729.64, 130,112.84 and 30,567.48

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Solution

The fourth proportional to 86,729.64, 130,112.84 and 30,567.48 is: 45,857.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,729.64 : 130,112.84 = 30,567.48 : x
  2. Step 2: Convert to fraction form
    86,729.64/130,112.84 = 30,567.48/x
  3. Step 3: Cross multiply
    86,729.64x = 130,112.84 × 30,567.48
  4. Step 4: Simplify right side
    86,729.64x = 3,977,221,634.44
  5. Step 5: Solve for x
    x = 3,977,221,634.44/86,729.64
  6. Step 6: Final answer
    x = 45,857.70

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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.