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Finding the Fourth Proportional to 72,656.92, 100,271.01 and 40,825.81

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Solution

The fourth proportional to 72,656.92, 100,271.01 and 40,825.81 is: 56,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,656.92 : 100,271.01 = 40,825.81 : x
  2. Step 2: Convert to fraction form
    72,656.92/100,271.01 = 40,825.81/x
  3. Step 3: Cross multiply
    72,656.92x = 100,271.01 × 40,825.81
  4. Step 4: Simplify right side
    72,656.92x = 4,093,645,202.77
  5. Step 5: Solve for x
    x = 4,093,645,202.77/72,656.92
  6. Step 6: Final answer
    x = 56,342.12

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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.