Home / 90,009.02-135,032.67-30,828.80

Finding the Fourth Proportional to 90,009.02, 135,032.67 and 30,828.80

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Solution

The fourth proportional to 90,009.02, 135,032.67 and 30,828.80 is: 46,249.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,009.02 : 135,032.67 = 30,828.80 : x
  2. Step 2: Convert to fraction form
    90,009.02/135,032.67 = 30,828.80/x
  3. Step 3: Cross multiply
    90,009.02x = 135,032.67 × 30,828.80
  4. Step 4: Simplify right side
    90,009.02x = 4,162,895,514.48
  5. Step 5: Solve for x
    x = 4,162,895,514.48/90,009.02
  6. Step 6: Final answer
    x = 46,249.76

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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.