Home / 78,262.96-117,390.36-25,665.52

Finding the Fourth Proportional to 78,262.96, 117,390.36 and 25,665.52

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Solution

The fourth proportional to 78,262.96, 117,390.36 and 25,665.52 is: 38,496.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,262.96 : 117,390.36 = 25,665.52 : x
  2. Step 2: Convert to fraction form
    78,262.96/117,390.36 = 25,665.52/x
  3. Step 3: Cross multiply
    78,262.96x = 117,390.36 × 25,665.52
  4. Step 4: Simplify right side
    78,262.96x = 3,012,884,632.39
  5. Step 5: Solve for x
    x = 3,012,884,632.39/78,262.96
  6. Step 6: Final answer
    x = 38,496.94

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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.