Home / 91,619.20-137,434.24-28,445.28

Finding the Fourth Proportional to 91,619.20, 137,434.24 and 28,445.28

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Solution

The fourth proportional to 91,619.20, 137,434.24 and 28,445.28 is: 42,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,619.20 : 137,434.24 = 28,445.28 : x
  2. Step 2: Convert to fraction form
    91,619.20/137,434.24 = 28,445.28/x
  3. Step 3: Cross multiply
    91,619.20x = 137,434.24 × 28,445.28
  4. Step 4: Simplify right side
    91,619.20x = 3,909,355,438.39
  5. Step 5: Solve for x
    x = 3,909,355,438.39/91,619.20
  6. Step 6: Final answer
    x = 42,669.61

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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.