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Finding the Fourth Proportional to 72,746.68, 100,382.58 and 40,908.82

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Solution

The fourth proportional to 72,746.68, 100,382.58 and 40,908.82 is: 56,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,746.68 : 100,382.58 = 40,908.82 : x
  2. Step 2: Convert to fraction form
    72,746.68/100,382.58 = 40,908.82/x
  3. Step 3: Cross multiply
    72,746.68x = 100,382.58 × 40,908.82
  4. Step 4: Simplify right side
    72,746.68x = 4,106,532,896.36
  5. Step 5: Solve for x
    x = 4,106,532,896.36/72,746.68
  6. Step 6: Final answer
    x = 56,449.76

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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.