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Finding the Fourth Proportional to 72,763.52, 100,412.62 and 40,932.46

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Solution

The fourth proportional to 72,763.52, 100,412.62 and 40,932.46 is: 56,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.52 : 100,412.62 = 40,932.46 : x
  2. Step 2: Convert to fraction form
    72,763.52/100,412.62 = 40,932.46/x
  3. Step 3: Cross multiply
    72,763.52x = 100,412.62 × 40,932.46
  4. Step 4: Simplify right side
    72,763.52x = 4,110,135,551.65
  5. Step 5: Solve for x
    x = 4,110,135,551.65/72,763.52
  6. Step 6: Final answer
    x = 56,486.21

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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.