Home / 72,419.58-99,933.48-40,582.32

Finding the Fourth Proportional to 72,419.58, 99,933.48 and 40,582.32

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Solution

The fourth proportional to 72,419.58, 99,933.48 and 40,582.32 is: 56,000.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,419.58 : 99,933.48 = 40,582.32 : x
  2. Step 2: Convert to fraction form
    72,419.58/99,933.48 = 40,582.32/x
  3. Step 3: Cross multiply
    72,419.58x = 99,933.48 × 40,582.32
  4. Step 4: Simplify right side
    72,419.58x = 4,055,532,464.07
  5. Step 5: Solve for x
    x = 4,055,532,464.07/72,419.58
  6. Step 6: Final answer
    x = 56,000.50

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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.