Home / 72,420.36-99,933.39-40,582.50

Finding the Fourth Proportional to 72,420.36, 99,933.39 and 40,582.50

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Solution

The fourth proportional to 72,420.36, 99,933.39 and 40,582.50 is: 56,000.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,420.36 : 99,933.39 = 40,582.50 : x
  2. Step 2: Convert to fraction form
    72,420.36/99,933.39 = 40,582.50/x
  3. Step 3: Cross multiply
    72,420.36x = 99,933.39 × 40,582.50
  4. Step 4: Simplify right side
    72,420.36x = 4,055,546,799.68
  5. Step 5: Solve for x
    x = 4,055,546,799.68/72,420.36
  6. Step 6: Final answer
    x = 56,000.09

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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.