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Finding the Fourth Proportional to 72,494.73, 100,036.01 and 40,657.47

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Solution

The fourth proportional to 72,494.73, 100,036.01 and 40,657.47 is: 56,103.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,494.73 : 100,036.01 = 40,657.47 : x
  2. Step 2: Convert to fraction form
    72,494.73/100,036.01 = 40,657.47/x
  3. Step 3: Cross multiply
    72,494.73x = 100,036.01 × 40,657.47
  4. Step 4: Simplify right side
    72,494.73x = 4,067,210,872.21
  5. Step 5: Solve for x
    x = 4,067,210,872.21/72,494.73
  6. Step 6: Final answer
    x = 56,103.54

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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.