Home / 71,809.04-107,712.81-18,500.81

Finding the Fourth Proportional to 71,809.04, 107,712.81 and 18,500.81

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Solution

The fourth proportional to 71,809.04, 107,712.81 and 18,500.81 is: 27,751.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,809.04 : 107,712.81 = 18,500.81 : x
  2. Step 2: Convert to fraction form
    71,809.04/107,712.81 = 18,500.81/x
  3. Step 3: Cross multiply
    71,809.04x = 107,712.81 × 18,500.81
  4. Step 4: Simplify right side
    71,809.04x = 1,992,773,693.81
  5. Step 5: Solve for x
    x = 1,992,773,693.81/71,809.04
  6. Step 6: Final answer
    x = 27,751.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.