Home / 78,427.36-117,574.90-34,020.66

Finding the Fourth Proportional to 78,427.36, 117,574.90 and 34,020.66

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Solution

The fourth proportional to 78,427.36, 117,574.90 and 34,020.66 is: 51,002.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.36 : 117,574.90 = 34,020.66 : x
  2. Step 2: Convert to fraction form
    78,427.36/117,574.90 = 34,020.66/x
  3. Step 3: Cross multiply
    78,427.36x = 117,574.90 × 34,020.66
  4. Step 4: Simplify right side
    78,427.36x = 3,999,975,697.43
  5. Step 5: Solve for x
    x = 3,999,975,697.43/78,427.36
  6. Step 6: Final answer
    x = 51,002.30

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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.