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Finding the Fourth Proportional to 84,107.84, 126,108.48 and 39,672.32

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Solution

The fourth proportional to 84,107.84, 126,108.48 and 39,672.32 is: 59,483.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,107.84 : 126,108.48 = 39,672.32 : x
  2. Step 2: Convert to fraction form
    84,107.84/126,108.48 = 39,672.32/x
  3. Step 3: Cross multiply
    84,107.84x = 126,108.48 × 39,672.32
  4. Step 4: Simplify right side
    84,107.84x = 5,003,015,973.27
  5. Step 5: Solve for x
    x = 5,003,015,973.27/84,107.84
  6. Step 6: Final answer
    x = 59,483.35

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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.