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Finding the Fourth Proportional to 115,592.40, 173,345.40 and 45,457.20

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Solution

The fourth proportional to 115,592.40, 173,345.40 and 45,457.20 is: 68,168.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,592.40 : 173,345.40 = 45,457.20 : x
  2. Step 2: Convert to fraction form
    115,592.40/173,345.40 = 45,457.20/x
  3. Step 3: Cross multiply
    115,592.40x = 173,345.40 × 45,457.20
  4. Step 4: Simplify right side
    115,592.40x = 7,879,796,516.88
  5. Step 5: Solve for x
    x = 7,879,796,516.88/115,592.40
  6. Step 6: Final answer
    x = 68,168.81

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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.