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Finding the Fourth Proportional to 72,763.41, 100,408.10 and 40,926.16

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Solution

The fourth proportional to 72,763.41, 100,408.10 and 40,926.16 is: 56,475.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.41 : 100,408.10 = 40,926.16 : x
  2. Step 2: Convert to fraction form
    72,763.41/100,408.10 = 40,926.16/x
  3. Step 3: Cross multiply
    72,763.41x = 100,408.10 × 40,926.16
  4. Step 4: Simplify right side
    72,763.41x = 4,109,317,965.90
  5. Step 5: Solve for x
    x = 4,109,317,965.90/72,763.41
  6. Step 6: Final answer
    x = 56,475.06

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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.