Home / 71,708.04-107,561.64-18,399.72

Finding the Fourth Proportional to 71,708.04, 107,561.64 and 18,399.72

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Solution

The fourth proportional to 71,708.04, 107,561.64 and 18,399.72 is: 27,599.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,708.04 : 107,561.64 = 18,399.72 : x
  2. Step 2: Convert to fraction form
    71,708.04/107,561.64 = 18,399.72/x
  3. Step 3: Cross multiply
    71,708.04x = 107,561.64 × 18,399.72
  4. Step 4: Simplify right side
    71,708.04x = 1,979,104,058.74
  5. Step 5: Solve for x
    x = 1,979,104,058.74/71,708.04
  6. Step 6: Final answer
    x = 27,599.47

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1.5x scale

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.