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Finding the Fourth Proportional to 72,762.41, 100,406.72 and 40,925.16

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Solution

The fourth proportional to 72,762.41, 100,406.72 and 40,925.16 is: 56,473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,762.41 : 100,406.72 = 40,925.16 : x
  2. Step 2: Convert to fraction form
    72,762.41/100,406.72 = 40,925.16/x
  3. Step 3: Cross multiply
    72,762.41x = 100,406.72 × 40,925.16
  4. Step 4: Simplify right side
    72,762.41x = 4,109,161,183.39
  5. Step 5: Solve for x
    x = 4,109,161,183.39/72,762.41
  6. Step 6: Final answer
    x = 56,473.68

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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.