Home / 68,742.72-103,021.92-56,577.60

Finding the Fourth Proportional to 68,742.72, 103,021.92 and 56,577.60

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Solution

The fourth proportional to 68,742.72, 103,021.92 and 56,577.60 is: 84,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,742.72 : 103,021.92 = 56,577.60 : x
  2. Step 2: Convert to fraction form
    68,742.72/103,021.92 = 56,577.60/x
  3. Step 3: Cross multiply
    68,742.72x = 103,021.92 × 56,577.60
  4. Step 4: Simplify right side
    68,742.72x = 5,828,732,980.99
  5. Step 5: Solve for x
    x = 5,828,732,980.99/68,742.72
  6. Step 6: Final answer
    x = 84,790.55

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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.