Home / 74,071.72-111,108.30-18,667.72

Finding the Fourth Proportional to 74,071.72, 111,108.30 and 18,667.72

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Solution

The fourth proportional to 74,071.72, 111,108.30 and 18,667.72 is: 28,001.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,071.72 : 111,108.30 = 18,667.72 : x
  2. Step 2: Convert to fraction form
    74,071.72/111,108.30 = 18,667.72/x
  3. Step 3: Cross multiply
    74,071.72x = 111,108.30 × 18,667.72
  4. Step 4: Simplify right side
    74,071.72x = 2,074,138,634.08
  5. Step 5: Solve for x
    x = 2,074,138,634.08/74,071.72
  6. Step 6: Final answer
    x = 28,001.76

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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.