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Finding the Fourth Proportional to 62,138.73, 85,762.57 and 36,643.55

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Solution

The fourth proportional to 62,138.73, 85,762.57 and 36,643.55 is: 50,574.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,138.73 : 85,762.57 = 36,643.55 : x
  2. Step 2: Convert to fraction form
    62,138.73/85,762.57 = 36,643.55/x
  3. Step 3: Cross multiply
    62,138.73x = 85,762.57 × 36,643.55
  4. Step 4: Simplify right side
    62,138.73x = 3,142,645,021.92
  5. Step 5: Solve for x
    x = 3,142,645,021.92/62,138.73
  6. Step 6: Final answer
    x = 50,574.66

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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.