Home / 72,762.30-100,408.68-40,498.56

Finding the Fourth Proportional to 72,762.30, 100,408.68 and 40,498.56

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Solution

The fourth proportional to 72,762.30, 100,408.68 and 40,498.56 is: 55,886.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,762.30 : 100,408.68 = 40,498.56 : x
  2. Step 2: Convert to fraction form
    72,762.30/100,408.68 = 40,498.56/x
  3. Step 3: Cross multiply
    72,762.30x = 100,408.68 × 40,498.56
  4. Step 4: Simplify right side
    72,762.30x = 4,066,406,951.50
  5. Step 5: Solve for x
    x = 4,066,406,951.50/72,762.30
  6. Step 6: Final answer
    x = 55,886.18

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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.