Home / 51,190.63-70,648.80-28,531.69

Finding the Fourth Proportional to 51,190.63, 70,648.80 and 28,531.69

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Solution

The fourth proportional to 51,190.63, 70,648.80 and 28,531.69 is: 39,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,190.63 : 70,648.80 = 28,531.69 : x
  2. Step 2: Convert to fraction form
    51,190.63/70,648.80 = 28,531.69/x
  3. Step 3: Cross multiply
    51,190.63x = 70,648.80 × 28,531.69
  4. Step 4: Simplify right side
    51,190.63x = 2,015,729,483.85
  5. Step 5: Solve for x
    x = 2,015,729,483.85/51,190.63
  6. Step 6: Final answer
    x = 39,376.92

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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.