Home / 78,237.20-117,356.28-19,073.36

Finding the Fourth Proportional to 78,237.20, 117,356.28 and 19,073.36

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Solution

The fourth proportional to 78,237.20, 117,356.28 and 19,073.36 is: 28,610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,237.20 : 117,356.28 = 19,073.36 : x
  2. Step 2: Convert to fraction form
    78,237.20/117,356.28 = 19,073.36/x
  3. Step 3: Cross multiply
    78,237.20x = 117,356.28 × 19,073.36
  4. Step 4: Simplify right side
    78,237.20x = 2,238,378,576.70
  5. Step 5: Solve for x
    x = 2,238,378,576.70/78,237.20
  6. Step 6: Final answer
    x = 28,610.16

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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.