Home / 72,172.76-99,600.20-40,346.96

Finding the Fourth Proportional to 72,172.76, 99,600.20 and 40,346.96

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Solution

The fourth proportional to 72,172.76, 99,600.20 and 40,346.96 is: 55,679.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,172.76 : 99,600.20 = 40,346.96 : x
  2. Step 2: Convert to fraction form
    72,172.76/99,600.20 = 40,346.96/x
  3. Step 3: Cross multiply
    72,172.76x = 99,600.20 × 40,346.96
  4. Step 4: Simplify right side
    72,172.76x = 4,018,565,285.39
  5. Step 5: Solve for x
    x = 4,018,565,285.39/72,172.76
  6. Step 6: Final answer
    x = 55,679.81

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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.