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Finding the Fourth Proportional to 90,649.94, 135,960.87 and 46,309.46

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Solution

The fourth proportional to 90,649.94, 135,960.87 and 46,309.46 is: 69,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,649.94 : 135,960.87 = 46,309.46 : x
  2. Step 2: Convert to fraction form
    90,649.94/135,960.87 = 46,309.46/x
  3. Step 3: Cross multiply
    90,649.94x = 135,960.87 × 46,309.46
  4. Step 4: Simplify right side
    90,649.94x = 6,296,274,470.83
  5. Step 5: Solve for x
    x = 6,296,274,470.83/90,649.94
  6. Step 6: Final answer
    x = 69,457.02

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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.