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Finding the Fourth Proportional to 84,116.01, 126,137.09 and 31,488.59

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Solution

The fourth proportional to 84,116.01, 126,137.09 and 31,488.59 is: 47,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,116.01 : 126,137.09 = 31,488.59 : x
  2. Step 2: Convert to fraction form
    84,116.01/126,137.09 = 31,488.59/x
  3. Step 3: Cross multiply
    84,116.01x = 126,137.09 × 31,488.59
  4. Step 4: Simplify right side
    84,116.01x = 3,971,878,322.67
  5. Step 5: Solve for x
    x = 3,971,878,322.67/84,116.01
  6. Step 6: Final answer
    x = 47,219.05

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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.