Home / 42,907.50-64,299.92-18,863.01

Finding the Fourth Proportional to 42,907.50, 64,299.92 and 18,863.01

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Solution

The fourth proportional to 42,907.50, 64,299.92 and 18,863.01 is: 28,267.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,907.50 : 64,299.92 = 18,863.01 : x
  2. Step 2: Convert to fraction form
    42,907.50/64,299.92 = 18,863.01/x
  3. Step 3: Cross multiply
    42,907.50x = 64,299.92 × 18,863.01
  4. Step 4: Simplify right side
    42,907.50x = 1,212,889,939.64
  5. Step 5: Solve for x
    x = 1,212,889,939.64/42,907.50
  6. Step 6: Final answer
    x = 28,267.55

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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.