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Finding the Fourth Proportional to 72,730.41, 100,253.59 and 66,628.68

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Solution

The fourth proportional to 72,730.41, 100,253.59 and 66,628.68 is: 91,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,730.41 : 100,253.59 = 66,628.68 : x
  2. Step 2: Convert to fraction form
    72,730.41/100,253.59 = 66,628.68/x
  3. Step 3: Cross multiply
    72,730.41x = 100,253.59 × 66,628.68
  4. Step 4: Simplify right side
    72,730.41x = 6,679,764,366.96
  5. Step 5: Solve for x
    x = 6,679,764,366.96/72,730.41
  6. Step 6: Final answer
    x = 91,842.80

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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.