Home / 78,280.15-117,402.79-22,125.51

Finding the Fourth Proportional to 78,280.15, 117,402.79 and 22,125.51

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Solution

The fourth proportional to 78,280.15, 117,402.79 and 22,125.51 is: 33,183.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,280.15 : 117,402.79 = 22,125.51 : x
  2. Step 2: Convert to fraction form
    78,280.15/117,402.79 = 22,125.51/x
  3. Step 3: Cross multiply
    78,280.15x = 117,402.79 × 22,125.51
  4. Step 4: Simplify right side
    78,280.15x = 2,597,596,604.17
  5. Step 5: Solve for x
    x = 2,597,596,604.17/78,280.15
  6. Step 6: Final answer
    x = 33,183.34

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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.