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Finding the Fourth Proportional to 90,739.37, 135,990.80 and 46,328.69

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Solution

The fourth proportional to 90,739.37, 135,990.80 and 46,328.69 is: 69,432.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,739.37 : 135,990.80 = 46,328.69 : x
  2. Step 2: Convert to fraction form
    90,739.37/135,990.80 = 46,328.69/x
  3. Step 3: Cross multiply
    90,739.37x = 135,990.80 × 46,328.69
  4. Step 4: Simplify right side
    90,739.37x = 6,300,275,898.12
  5. Step 5: Solve for x
    x = 6,300,275,898.12/90,739.37
  6. Step 6: Final answer
    x = 69,432.66

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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.