Home / 72,240.60-99,697.23-40,419.75

Finding the Fourth Proportional to 72,240.60, 99,697.23 and 40,419.75

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Solution

The fourth proportional to 72,240.60, 99,697.23 and 40,419.75 is: 55,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,240.60 : 99,697.23 = 40,419.75 : x
  2. Step 2: Convert to fraction form
    72,240.60/99,697.23 = 40,419.75/x
  3. Step 3: Cross multiply
    72,240.60x = 99,697.23 × 40,419.75
  4. Step 4: Simplify right side
    72,240.60x = 4,029,737,112.29
  5. Step 5: Solve for x
    x = 4,029,737,112.29/72,240.60
  6. Step 6: Final answer
    x = 55,782.17

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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.