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Finding the Fourth Proportional to 86,208.52, 129,317.64 and 27,042.88

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Solution

The fourth proportional to 86,208.52, 129,317.64 and 27,042.88 is: 40,565.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,208.52 : 129,317.64 = 27,042.88 : x
  2. Step 2: Convert to fraction form
    86,208.52/129,317.64 = 27,042.88/x
  3. Step 3: Cross multiply
    86,208.52x = 129,317.64 × 27,042.88
  4. Step 4: Simplify right side
    86,208.52x = 3,497,121,420.40
  5. Step 5: Solve for x
    x = 3,497,121,420.40/86,208.52
  6. Step 6: Final answer
    x = 40,565.84

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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.