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Finding the Fourth Proportional to 86,651.52, 119,589.12 and 52,661.76

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Solution

The fourth proportional to 86,651.52, 119,589.12 and 52,661.76 is: 72,679.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.52 : 119,589.12 = 52,661.76 : x
  2. Step 2: Convert to fraction form
    86,651.52/119,589.12 = 52,661.76/x
  3. Step 3: Cross multiply
    86,651.52x = 119,589.12 × 52,661.76
  4. Step 4: Simplify right side
    86,651.52x = 6,297,773,536.05
  5. Step 5: Solve for x
    x = 6,297,773,536.05/86,651.52
  6. Step 6: Final answer
    x = 72,679.32

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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.