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Finding the Fourth Proportional to 73,762.79, 110,618.60 and 45,639.86

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Solution

The fourth proportional to 73,762.79, 110,618.60 and 45,639.86 is: 68,443.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,762.79 : 110,618.60 = 45,639.86 : x
  2. Step 2: Convert to fraction form
    73,762.79/110,618.60 = 45,639.86/x
  3. Step 3: Cross multiply
    73,762.79x = 110,618.60 × 45,639.86
  4. Step 4: Simplify right side
    73,762.79x = 5,048,616,636.10
  5. Step 5: Solve for x
    x = 5,048,616,636.10/73,762.79
  6. Step 6: Final answer
    x = 68,443.95

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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.