Home / 72,233.06-99,686.84-40,412.21

Finding the Fourth Proportional to 72,233.06, 99,686.84 and 40,412.21

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Solution

The fourth proportional to 72,233.06, 99,686.84 and 40,412.21 is: 55,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,233.06 : 99,686.84 = 40,412.21 : x
  2. Step 2: Convert to fraction form
    72,233.06/99,686.84 = 40,412.21/x
  3. Step 3: Cross multiply
    72,233.06x = 99,686.84 × 40,412.21
  4. Step 4: Simplify right side
    72,233.06x = 4,028,564,811.82
  5. Step 5: Solve for x
    x = 4,028,564,811.82/72,233.06
  6. Step 6: Final answer
    x = 55,771.76

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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.