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Finding the Fourth Proportional to 91,592.94, 137,409.12 and 28,411.80

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Solution

The fourth proportional to 91,592.94, 137,409.12 and 28,411.80 is: 42,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,592.94 : 137,409.12 = 28,411.80 : x
  2. Step 2: Convert to fraction form
    91,592.94/137,409.12 = 28,411.80/x
  3. Step 3: Cross multiply
    91,592.94x = 137,409.12 × 28,411.80
  4. Step 4: Simplify right side
    91,592.94x = 3,904,040,435.62
  5. Step 5: Solve for x
    x = 3,904,040,435.62/91,592.94
  6. Step 6: Final answer
    x = 42,623.81

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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.