Home / 78,355.20-117,550.08-25,762.56

Finding the Fourth Proportional to 78,355.20, 117,550.08 and 25,762.56

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Solution

The fourth proportional to 78,355.20, 117,550.08 and 25,762.56 is: 38,649.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,355.20 : 117,550.08 = 25,762.56 : x
  2. Step 2: Convert to fraction form
    78,355.20/117,550.08 = 25,762.56/x
  3. Step 3: Cross multiply
    78,355.20x = 117,550.08 × 25,762.56
  4. Step 4: Simplify right side
    78,355.20x = 3,028,390,989.00
  5. Step 5: Solve for x
    x = 3,028,390,989.00/78,355.20
  6. Step 6: Final answer
    x = 38,649.52

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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.