Home / 51,435.45-70,987.46-28,775.70

Finding the Fourth Proportional to 51,435.45, 70,987.46 and 28,775.70

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Solution

The fourth proportional to 51,435.45, 70,987.46 and 28,775.70 is: 39,714.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,435.45 : 70,987.46 = 28,775.70 : x
  2. Step 2: Convert to fraction form
    51,435.45/70,987.46 = 28,775.70/x
  3. Step 3: Cross multiply
    51,435.45x = 70,987.46 × 28,775.70
  4. Step 4: Simplify right side
    51,435.45x = 2,042,713,708.84
  5. Step 5: Solve for x
    x = 2,042,713,708.84/51,435.45
  6. Step 6: Final answer
    x = 39,714.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.