Home / 78,424.24-117,636.36-28,495.03

Finding the Fourth Proportional to 78,424.24, 117,636.36 and 28,495.03

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Solution

The fourth proportional to 78,424.24, 117,636.36 and 28,495.03 is: 42,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424.24 : 117,636.36 = 28,495.03 : x
  2. Step 2: Convert to fraction form
    78,424.24/117,636.36 = 28,495.03/x
  3. Step 3: Cross multiply
    78,424.24x = 117,636.36 × 28,495.03
  4. Step 4: Simplify right side
    78,424.24x = 3,352,051,607.29
  5. Step 5: Solve for x
    x = 3,352,051,607.29/78,424.24
  6. Step 6: Final answer
    x = 42,742.55

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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.