Home / 40,939.40-61,263.30-28,400.60

Finding the Fourth Proportional to 40,939.40, 61,263.30 and 28,400.60

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Solution

The fourth proportional to 40,939.40, 61,263.30 and 28,400.60 is: 42,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,939.40 : 61,263.30 = 28,400.60 : x
  2. Step 2: Convert to fraction form
    40,939.40/61,263.30 = 28,400.60/x
  3. Step 3: Cross multiply
    40,939.40x = 61,263.30 × 28,400.60
  4. Step 4: Simplify right side
    40,939.40x = 1,739,914,477.98
  5. Step 5: Solve for x
    x = 1,739,914,477.98/40,939.40
  6. Step 6: Final answer
    x = 42,499.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.