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Finding the Fourth Proportional to 86,463.64, 129,582.40 and 44,308

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Solution

The fourth proportional to 86,463.64, 129,582.40 and 44,308 is: 66,404.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,463.64 : 129,582.40 = 44,308 : x
  2. Step 2: Convert to fraction form
    86,463.64/129,582.40 = 44,308/x
  3. Step 3: Cross multiply
    86,463.64x = 129,582.40 × 44,308
  4. Step 4: Simplify right side
    86,463.64x = 5,741,536,979.20
  5. Step 5: Solve for x
    x = 5,741,536,979.20/86,463.64
  6. Step 6: Final answer
    x = 66,404.06

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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.