Home / 42,790.58-64,217.40-20,301.32

Finding the Fourth Proportional to 42,790.58, 64,217.40 and 20,301.32

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Solution

The fourth proportional to 42,790.58, 64,217.40 and 20,301.32 is: 30,466.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,790.58 : 64,217.40 = 20,301.32 : x
  2. Step 2: Convert to fraction form
    42,790.58/64,217.40 = 20,301.32/x
  3. Step 3: Cross multiply
    42,790.58x = 64,217.40 × 20,301.32
  4. Step 4: Simplify right side
    42,790.58x = 1,303,697,986.97
  5. Step 5: Solve for x
    x = 1,303,697,986.97/42,790.58
  6. Step 6: Final answer
    x = 30,466.94

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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.