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Finding the Fourth Proportional to 84,492.90, 126,735.30 and 28,333.80

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Solution

The fourth proportional to 84,492.90, 126,735.30 and 28,333.80 is: 42,499.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,492.90 : 126,735.30 = 28,333.80 : x
  2. Step 2: Convert to fraction form
    84,492.90/126,735.30 = 28,333.80/x
  3. Step 3: Cross multiply
    84,492.90x = 126,735.30 × 28,333.80
  4. Step 4: Simplify right side
    84,492.90x = 3,590,892,643.14
  5. Step 5: Solve for x
    x = 3,590,892,643.14/84,492.90
  6. Step 6: Final answer
    x = 42,499.34

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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.