Home / 91,589.56-137,404.02-28,408.36

Finding the Fourth Proportional to 91,589.56, 137,404.02 and 28,408.36

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Solution

The fourth proportional to 91,589.56, 137,404.02 and 28,408.36 is: 42,618.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,589.56 : 137,404.02 = 28,408.36 : x
  2. Step 2: Convert to fraction form
    91,589.56/137,404.02 = 28,408.36/x
  3. Step 3: Cross multiply
    91,589.56x = 137,404.02 × 28,408.36
  4. Step 4: Simplify right side
    91,589.56x = 3,903,422,865.61
  5. Step 5: Solve for x
    x = 3,903,422,865.61/91,589.56
  6. Step 6: Final answer
    x = 42,618.64

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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.