Home / 42,729.60-64,068.80-21,993.60

Finding the Fourth Proportional to 42,729.60, 64,068.80 and 21,993.60

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Solution

The fourth proportional to 42,729.60, 64,068.80 and 21,993.60 is: 32,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,729.60 : 64,068.80 = 21,993.60 : x
  2. Step 2: Convert to fraction form
    42,729.60/64,068.80 = 21,993.60/x
  3. Step 3: Cross multiply
    42,729.60x = 64,068.80 × 21,993.60
  4. Step 4: Simplify right side
    42,729.60x = 1,409,103,559.68
  5. Step 5: Solve for x
    x = 1,409,103,559.68/42,729.60
  6. Step 6: Final answer
    x = 32,977.22

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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.