Home / 78,047.02-117,023.11-30,605.26

Finding the Fourth Proportional to 78,047.02, 117,023.11 and 30,605.26

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Solution

The fourth proportional to 78,047.02, 117,023.11 and 30,605.26 is: 45,889.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,047.02 : 117,023.11 = 30,605.26 : x
  2. Step 2: Convert to fraction form
    78,047.02/117,023.11 = 30,605.26/x
  3. Step 3: Cross multiply
    78,047.02x = 117,023.11 × 30,605.26
  4. Step 4: Simplify right side
    78,047.02x = 3,581,522,554.53
  5. Step 5: Solve for x
    x = 3,581,522,554.53/78,047.02
  6. Step 6: Final answer
    x = 45,889.30

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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.