Home / 42,788.58-64,214.40-20,299.33

Finding the Fourth Proportional to 42,788.58, 64,214.40 and 20,299.33

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Solution

The fourth proportional to 42,788.58, 64,214.40 and 20,299.33 is: 30,463.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,788.58 : 64,214.40 = 20,299.33 : x
  2. Step 2: Convert to fraction form
    42,788.58/64,214.40 = 20,299.33/x
  3. Step 3: Cross multiply
    42,788.58x = 64,214.40 × 20,299.33
  4. Step 4: Simplify right side
    42,788.58x = 1,303,509,296.35
  5. Step 5: Solve for x
    x = 1,303,509,296.35/42,788.58
  6. Step 6: Final answer
    x = 30,463.95

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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.