Home / 78,427.20-117,574.64-34,020.48

Finding the Fourth Proportional to 78,427.20, 117,574.64 and 34,020.48

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Solution

The fourth proportional to 78,427.20, 117,574.64 and 34,020.48 is: 51,002.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.20 : 117,574.64 = 34,020.48 : x
  2. Step 2: Convert to fraction form
    78,427.20/117,574.64 = 34,020.48/x
  3. Step 3: Cross multiply
    78,427.20x = 117,574.64 × 34,020.48
  4. Step 4: Simplify right side
    78,427.20x = 3,999,945,688.63
  5. Step 5: Solve for x
    x = 3,999,945,688.63/78,427.20
  6. Step 6: Final answer
    x = 51,002.02

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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.