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Finding the Fourth Proportional to 84,261.90, 126,392.85 and 21,932.40

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Solution

The fourth proportional to 84,261.90, 126,392.85 and 21,932.40 is: 32,898.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,261.90 : 126,392.85 = 21,932.40 : x
  2. Step 2: Convert to fraction form
    84,261.90/126,392.85 = 21,932.40/x
  3. Step 3: Cross multiply
    84,261.90x = 126,392.85 × 21,932.40
  4. Step 4: Simplify right side
    84,261.90x = 2,772,098,543.34
  5. Step 5: Solve for x
    x = 2,772,098,543.34/84,261.90
  6. Step 6: Final answer
    x = 32,898.60

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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.