Home / 71,804.96-99,090.80-39,981.38

Finding the Fourth Proportional to 71,804.96, 99,090.80 and 39,981.38

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Solution

The fourth proportional to 71,804.96, 99,090.80 and 39,981.38 is: 55,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,804.96 : 99,090.80 = 39,981.38 : x
  2. Step 2: Convert to fraction form
    71,804.96/99,090.80 = 39,981.38/x
  3. Step 3: Cross multiply
    71,804.96x = 99,090.80 × 39,981.38
  4. Step 4: Simplify right side
    71,804.96x = 3,961,786,929.30
  5. Step 5: Solve for x
    x = 3,961,786,929.30/71,804.96
  6. Step 6: Final answer
    x = 55,174.28

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1.5x scale

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.