Home / 39,985.79-55,180.08-22,080.65

Finding the Fourth Proportional to 39,985.79, 55,180.08 and 22,080.65

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Solution

The fourth proportional to 39,985.79, 55,180.08 and 22,080.65 is: 30,471.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,985.79 : 55,180.08 = 22,080.65 : x
  2. Step 2: Convert to fraction form
    39,985.79/55,180.08 = 22,080.65/x
  3. Step 3: Cross multiply
    39,985.79x = 55,180.08 × 22,080.65
  4. Step 4: Simplify right side
    39,985.79x = 1,218,411,757.55
  5. Step 5: Solve for x
    x = 1,218,411,757.55/39,985.79
  6. Step 6: Final answer
    x = 30,471.12

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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.