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Finding the Fourth Proportional to 91,161.76, 136,762.48 and 27,982.24

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Solution

The fourth proportional to 91,161.76, 136,762.48 and 27,982.24 is: 41,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,161.76 : 136,762.48 = 27,982.24 : x
  2. Step 2: Convert to fraction form
    91,161.76/136,762.48 = 27,982.24/x
  3. Step 3: Cross multiply
    91,161.76x = 136,762.48 × 27,982.24
  4. Step 4: Simplify right side
    91,161.76x = 3,826,920,538.36
  5. Step 5: Solve for x
    x = 3,826,920,538.36/91,161.76
  6. Step 6: Final answer
    x = 41,979.45

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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.