Home / 51,089.90-70,505.42-28,120.37

Finding the Fourth Proportional to 51,089.90, 70,505.42 and 28,120.37

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Solution

The fourth proportional to 51,089.90, 70,505.42 and 28,120.37 is: 38,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,089.90 : 70,505.42 = 28,120.37 : x
  2. Step 2: Convert to fraction form
    51,089.90/70,505.42 = 28,120.37/x
  3. Step 3: Cross multiply
    51,089.90x = 70,505.42 × 28,120.37
  4. Step 4: Simplify right side
    51,089.90x = 1,982,638,497.41
  5. Step 5: Solve for x
    x = 1,982,638,497.41/51,089.90
  6. Step 6: Final answer
    x = 38,806.86

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1.5x scale

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.