Home / 72,318.96-99,797.40-40,051.80

Finding the Fourth Proportional to 72,318.96, 99,797.40 and 40,051.80

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Solution

The fourth proportional to 72,318.96, 99,797.40 and 40,051.80 is: 55,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,318.96 : 99,797.40 = 40,051.80 : x
  2. Step 2: Convert to fraction form
    72,318.96/99,797.40 = 40,051.80/x
  3. Step 3: Cross multiply
    72,318.96x = 99,797.40 × 40,051.80
  4. Step 4: Simplify right side
    72,318.96x = 3,997,065,505.32
  5. Step 5: Solve for x
    x = 3,997,065,505.32/72,318.96
  6. Step 6: Final answer
    x = 55,269.95

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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.