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Finding the Fourth Proportional to 74,572.64, 111,856.22 and 18,412.30

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Solution

The fourth proportional to 74,572.64, 111,856.22 and 18,412.30 is: 27,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,572.64 : 111,856.22 = 18,412.30 : x
  2. Step 2: Convert to fraction form
    74,572.64/111,856.22 = 18,412.30/x
  3. Step 3: Cross multiply
    74,572.64x = 111,856.22 × 18,412.30
  4. Step 4: Simplify right side
    74,572.64x = 2,059,530,279.51
  5. Step 5: Solve for x
    x = 2,059,530,279.51/74,572.64
  6. Step 6: Final answer
    x = 27,617.77

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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.