Home / 51,036.87-70,427.64-28,375.45

Finding the Fourth Proportional to 51,036.87, 70,427.64 and 28,375.45

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Solution

The fourth proportional to 51,036.87, 70,427.64 and 28,375.45 is: 39,156.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,036.87 : 70,427.64 = 28,375.45 : x
  2. Step 2: Convert to fraction form
    51,036.87/70,427.64 = 28,375.45/x
  3. Step 3: Cross multiply
    51,036.87x = 70,427.64 × 28,375.45
  4. Step 4: Simplify right side
    51,036.87x = 1,998,415,977.44
  5. Step 5: Solve for x
    x = 1,998,415,977.44/51,036.87
  6. Step 6: Final answer
    x = 39,156.32

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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.