Home / 51,381.54-70,907.40-28,720.98

Finding the Fourth Proportional to 51,381.54, 70,907.40 and 28,720.98

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Solution

The fourth proportional to 51,381.54, 70,907.40 and 28,720.98 is: 39,635.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,381.54 : 70,907.40 = 28,720.98 : x
  2. Step 2: Convert to fraction form
    51,381.54/70,907.40 = 28,720.98/x
  3. Step 3: Cross multiply
    51,381.54x = 70,907.40 × 28,720.98
  4. Step 4: Simplify right side
    51,381.54x = 2,036,530,017.25
  5. Step 5: Solve for x
    x = 2,036,530,017.25/51,381.54
  6. Step 6: Final answer
    x = 39,635.44

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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.