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Finding the Fourth Proportional to 86,432.67, 129,659.94 and 27,259.74

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Solution

The fourth proportional to 86,432.67, 129,659.94 and 27,259.74 is: 40,893.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,432.67 : 129,659.94 = 27,259.74 : x
  2. Step 2: Convert to fraction form
    86,432.67/129,659.94 = 27,259.74/x
  3. Step 3: Cross multiply
    86,432.67x = 129,659.94 × 27,259.74
  4. Step 4: Simplify right side
    86,432.67x = 3,534,496,252.82
  5. Step 5: Solve for x
    x = 3,534,496,252.82/86,432.67
  6. Step 6: Final answer
    x = 40,893.06

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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.