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Finding the Fourth Proportional to 81,184.56, 112,021 and 45,374.86

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Solution

The fourth proportional to 81,184.56, 112,021 and 45,374.86 is: 62,609.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,184.56 : 112,021 = 45,374.86 : x
  2. Step 2: Convert to fraction form
    81,184.56/112,021 = 45,374.86/x
  3. Step 3: Cross multiply
    81,184.56x = 112,021 × 45,374.86
  4. Step 4: Simplify right side
    81,184.56x = 5,082,937,192.06
  5. Step 5: Solve for x
    x = 5,082,937,192.06/81,184.56
  6. Step 6: Final answer
    x = 62,609.65

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1.5x scale

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.