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Finding the Fourth Proportional to 56,086.64, 84,106.92 and 21,008.24

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Solution

The fourth proportional to 56,086.64, 84,106.92 and 21,008.24 is: 31,503.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,086.64 : 84,106.92 = 21,008.24 : x
  2. Step 2: Convert to fraction form
    56,086.64/84,106.92 = 21,008.24/x
  3. Step 3: Cross multiply
    56,086.64x = 84,106.92 × 21,008.24
  4. Step 4: Simplify right side
    56,086.64x = 1,766,938,361.02
  5. Step 5: Solve for x
    x = 1,766,938,361.02/56,086.64
  6. Step 6: Final answer
    x = 31,503.73

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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.