Home / 78,427.28-117,574.76-34,020.58

Finding the Fourth Proportional to 78,427.28, 117,574.76 and 34,020.58

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Solution

The fourth proportional to 78,427.28, 117,574.76 and 34,020.58 is: 51,002.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.28 : 117,574.76 = 34,020.58 : x
  2. Step 2: Convert to fraction form
    78,427.28/117,574.76 = 34,020.58/x
  3. Step 3: Cross multiply
    78,427.28x = 117,574.76 × 34,020.58
  4. Step 4: Simplify right side
    78,427.28x = 3,999,961,528.56
  5. Step 5: Solve for x
    x = 3,999,961,528.56/78,427.28
  6. Step 6: Final answer
    x = 51,002.17

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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.