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Finding the Fourth Proportional to 86,043.34, 129,083.24 and 26,883.47

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Solution

The fourth proportional to 86,043.34, 129,083.24 and 26,883.47 is: 40,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,043.34 : 129,083.24 = 26,883.47 : x
  2. Step 2: Convert to fraction form
    86,043.34/129,083.24 = 26,883.47/x
  3. Step 3: Cross multiply
    86,043.34x = 129,083.24 × 26,883.47
  4. Step 4: Simplify right side
    86,043.34x = 3,470,205,799.96
  5. Step 5: Solve for x
    x = 3,470,205,799.96/86,043.34
  6. Step 6: Final answer
    x = 40,330.90

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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.