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Finding the Fourth Proportional to 86,999.41, 130,499.12 and 21,335.41

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Solution

The fourth proportional to 86,999.41, 130,499.12 and 21,335.41 is: 32,003.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.41 : 130,499.12 = 21,335.41 : x
  2. Step 2: Convert to fraction form
    86,999.41/130,499.12 = 21,335.41/x
  3. Step 3: Cross multiply
    86,999.41x = 130,499.12 × 21,335.41
  4. Step 4: Simplify right side
    86,999.41x = 2,784,252,229.84
  5. Step 5: Solve for x
    x = 2,784,252,229.84/86,999.41
  6. Step 6: Final answer
    x = 32,003.12

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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.