Home / 84,636.88-126,967.63-45,172.47

Finding the Fourth Proportional to 84,636.88, 126,967.63 and 45,172.47

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Solution

The fourth proportional to 84,636.88, 126,967.63 and 45,172.47 is: 67,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,636.88 : 126,967.63 = 45,172.47 : x
  2. Step 2: Convert to fraction form
    84,636.88/126,967.63 = 45,172.47/x
  3. Step 3: Cross multiply
    84,636.88x = 126,967.63 × 45,172.47
  4. Step 4: Simplify right side
    84,636.88x = 5,735,441,457.15
  5. Step 5: Solve for x
    x = 5,735,441,457.15/84,636.88
  6. Step 6: Final answer
    x = 67,765.28

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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.