Home / 45,501.96-68,139-28,811.64

Finding the Fourth Proportional to 45,501.96, 68,139 and 28,811.64

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Solution

The fourth proportional to 45,501.96, 68,139 and 28,811.64 is: 43,145.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,501.96 : 68,139 = 28,811.64 : x
  2. Step 2: Convert to fraction form
    45,501.96/68,139 = 28,811.64/x
  3. Step 3: Cross multiply
    45,501.96x = 68,139 × 28,811.64
  4. Step 4: Simplify right side
    45,501.96x = 1,963,196,337.96
  5. Step 5: Solve for x
    x = 1,963,196,337.96/45,501.96
  6. Step 6: Final answer
    x = 43,145.31

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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.