Home / 51,048.78-70,447.38-28,387.29

Finding the Fourth Proportional to 51,048.78, 70,447.38 and 28,387.29

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Solution

The fourth proportional to 51,048.78, 70,447.38 and 28,387.29 is: 39,174.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,048.78 : 70,447.38 = 28,387.29 : x
  2. Step 2: Convert to fraction form
    51,048.78/70,447.38 = 28,387.29/x
  3. Step 3: Cross multiply
    51,048.78x = 70,447.38 × 28,387.29
  4. Step 4: Simplify right side
    51,048.78x = 1,999,810,205.80
  5. Step 5: Solve for x
    x = 1,999,810,205.80/51,048.78
  6. Step 6: Final answer
    x = 39,174.50

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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.