Home / 91,617.96-137,420.41-28,436.55

Finding the Fourth Proportional to 91,617.96, 137,420.41 and 28,436.55

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Solution

The fourth proportional to 91,617.96, 137,420.41 and 28,436.55 is: 42,652.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,617.96 : 137,420.41 = 28,436.55 : x
  2. Step 2: Convert to fraction form
    91,617.96/137,420.41 = 28,436.55/x
  3. Step 3: Cross multiply
    91,617.96x = 137,420.41 × 28,436.55
  4. Step 4: Simplify right side
    91,617.96x = 3,907,762,359.99
  5. Step 5: Solve for x
    x = 3,907,762,359.99/91,617.96
  6. Step 6: Final answer
    x = 42,652.80

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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.