Home / 78,457.68-117,497.34-45,076.32

Finding the Fourth Proportional to 78,457.68, 117,497.34 and 45,076.32

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Solution

The fourth proportional to 78,457.68, 117,497.34 and 45,076.32 is: 67,505.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.68 : 117,497.34 = 45,076.32 : x
  2. Step 2: Convert to fraction form
    78,457.68/117,497.34 = 45,076.32/x
  3. Step 3: Cross multiply
    78,457.68x = 117,497.34 × 45,076.32
  4. Step 4: Simplify right side
    78,457.68x = 5,296,347,696.99
  5. Step 5: Solve for x
    x = 5,296,347,696.99/78,457.68
  6. Step 6: Final answer
    x = 67,505.79

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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.