Home / 45,547.20-68,355.36-30,720.96

Finding the Fourth Proportional to 45,547.20, 68,355.36 and 30,720.96

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Solution

The fourth proportional to 45,547.20, 68,355.36 and 30,720.96 is: 46,104.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,547.20 : 68,355.36 = 30,720.96 : x
  2. Step 2: Convert to fraction form
    45,547.20/68,355.36 = 30,720.96/x
  3. Step 3: Cross multiply
    45,547.20x = 68,355.36 × 30,720.96
  4. Step 4: Simplify right side
    45,547.20x = 2,099,942,280.35
  5. Step 5: Solve for x
    x = 2,099,942,280.35/45,547.20
  6. Step 6: Final answer
    x = 46,104.75

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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.