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Finding the Fourth Proportional to 92,762.62, 128,012.74 and 50,321.45

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Solution

The fourth proportional to 92,762.62, 128,012.74 and 50,321.45 is: 69,443.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,762.62 : 128,012.74 = 50,321.45 : x
  2. Step 2: Convert to fraction form
    92,762.62/128,012.74 = 50,321.45/x
  3. Step 3: Cross multiply
    92,762.62x = 128,012.74 × 50,321.45
  4. Step 4: Simplify right side
    92,762.62x = 6,441,786,889.50
  5. Step 5: Solve for x
    x = 6,441,786,889.50/92,762.62
  6. Step 6: Final answer
    x = 69,443.78

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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.