Home / 72,121.04-99,530.96-40,289.88

Finding the Fourth Proportional to 72,121.04, 99,530.96 and 40,289.88

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Solution

The fourth proportional to 72,121.04, 99,530.96 and 40,289.88 is: 55,602.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,121.04 : 99,530.96 = 40,289.88 : x
  2. Step 2: Convert to fraction form
    72,121.04/99,530.96 = 40,289.88/x
  3. Step 3: Cross multiply
    72,121.04x = 99,530.96 × 40,289.88
  4. Step 4: Simplify right side
    72,121.04x = 4,010,090,434.68
  5. Step 5: Solve for x
    x = 4,010,090,434.68/72,121.04
  6. Step 6: Final answer
    x = 55,602.23

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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.