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Finding the Fourth Proportional to 86,245.76, 129,374.10 and 27,083.76

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Solution

The fourth proportional to 86,245.76, 129,374.10 and 27,083.76 is: 40,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,245.76 : 129,374.10 = 27,083.76 : x
  2. Step 2: Convert to fraction form
    86,245.76/129,374.10 = 27,083.76/x
  3. Step 3: Cross multiply
    86,245.76x = 129,374.10 × 27,083.76
  4. Step 4: Simplify right side
    86,245.76x = 3,503,937,074.62
  5. Step 5: Solve for x
    x = 3,503,937,074.62/86,245.76
  6. Step 6: Final answer
    x = 40,627.35

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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.