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Finding the Fourth Proportional to 72,766.59, 100,417.72 and 40,935.48

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Solution

The fourth proportional to 72,766.59, 100,417.72 and 40,935.48 is: 56,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,766.59 : 100,417.72 = 40,935.48 : x
  2. Step 2: Convert to fraction form
    72,766.59/100,417.72 = 40,935.48/x
  3. Step 3: Cross multiply
    72,766.59x = 100,417.72 × 40,935.48
  4. Step 4: Simplify right side
    72,766.59x = 4,110,647,568.71
  5. Step 5: Solve for x
    x = 4,110,647,568.71/72,766.59
  6. Step 6: Final answer
    x = 56,490.86

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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.