Home / 78,409.08-117,620.12-25,108.84

Finding the Fourth Proportional to 78,409.08, 117,620.12 and 25,108.84

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Solution

The fourth proportional to 78,409.08, 117,620.12 and 25,108.84 is: 37,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,409.08 : 117,620.12 = 25,108.84 : x
  2. Step 2: Convert to fraction form
    78,409.08/117,620.12 = 25,108.84/x
  3. Step 3: Cross multiply
    78,409.08x = 117,620.12 × 25,108.84
  4. Step 4: Simplify right side
    78,409.08x = 2,953,304,773.86
  5. Step 5: Solve for x
    x = 2,953,304,773.86/78,409.08
  6. Step 6: Final answer
    x = 37,665.34

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1.5x scale

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.