Home / 78,430.37-117,645.39-22,270.98

Finding the Fourth Proportional to 78,430.37, 117,645.39 and 22,270.98

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Solution

The fourth proportional to 78,430.37, 117,645.39 and 22,270.98 is: 33,406.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,430.37 : 117,645.39 = 22,270.98 : x
  2. Step 2: Convert to fraction form
    78,430.37/117,645.39 = 22,270.98/x
  3. Step 3: Cross multiply
    78,430.37x = 117,645.39 × 22,270.98
  4. Step 4: Simplify right side
    78,430.37x = 2,620,078,127.78
  5. Step 5: Solve for x
    x = 2,620,078,127.78/78,430.37
  6. Step 6: Final answer
    x = 33,406.43

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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.