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Finding the Fourth Proportional to 91,230.40, 125,898 and 53,504.80

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Solution

The fourth proportional to 91,230.40, 125,898 and 53,504.80 is: 73,836.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,230.40 : 125,898 = 53,504.80 : x
  2. Step 2: Convert to fraction form
    91,230.40/125,898 = 53,504.80/x
  3. Step 3: Cross multiply
    91,230.40x = 125,898 × 53,504.80
  4. Step 4: Simplify right side
    91,230.40x = 6,736,147,310.40
  5. Step 5: Solve for x
    x = 6,736,147,310.40/91,230.40
  6. Step 6: Final answer
    x = 73,836.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.