Home / 90,409.02-135,611.73-28,079.34

Finding the Fourth Proportional to 90,409.02, 135,611.73 and 28,079.34

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Solution

The fourth proportional to 90,409.02, 135,611.73 and 28,079.34 is: 42,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,409.02 : 135,611.73 = 28,079.34 : x
  2. Step 2: Convert to fraction form
    90,409.02/135,611.73 = 28,079.34/x
  3. Step 3: Cross multiply
    90,409.02x = 135,611.73 × 28,079.34
  4. Step 4: Simplify right side
    90,409.02x = 3,807,887,874.66
  5. Step 5: Solve for x
    x = 3,807,887,874.66/90,409.02
  6. Step 6: Final answer
    x = 42,118.45

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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.