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Finding the Fourth Proportional to 84,967.40, 127,451.10 and 75,927.80

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Solution

The fourth proportional to 84,967.40, 127,451.10 and 75,927.80 is: 113,891.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,967.40 : 127,451.10 = 75,927.80 : x
  2. Step 2: Convert to fraction form
    84,967.40/127,451.10 = 75,927.80/x
  3. Step 3: Cross multiply
    84,967.40x = 127,451.10 × 75,927.80
  4. Step 4: Simplify right side
    84,967.40x = 9,677,081,630.58
  5. Step 5: Solve for x
    x = 9,677,081,630.58/84,967.40
  6. Step 6: Final answer
    x = 113,891.70

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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.