Home / 90,633.86-125,090.76-67,778.36

Finding the Fourth Proportional to 90,633.86, 125,090.76 and 67,778.36

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Solution

The fourth proportional to 90,633.86, 125,090.76 and 67,778.36 is: 93,546.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,633.86 : 125,090.76 = 67,778.36 : x
  2. Step 2: Convert to fraction form
    90,633.86/125,090.76 = 67,778.36/x
  3. Step 3: Cross multiply
    90,633.86x = 125,090.76 × 67,778.36
  4. Step 4: Simplify right side
    90,633.86x = 8,478,446,563.95
  5. Step 5: Solve for x
    x = 8,478,446,563.95/90,633.86
  6. Step 6: Final answer
    x = 93,546.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.