Home / 84,120.14-126,175.26-31,525.22

Finding the Fourth Proportional to 84,120.14, 126,175.26 and 31,525.22

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Solution

The fourth proportional to 84,120.14, 126,175.26 and 31,525.22 is: 47,285.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,120.14 : 126,175.26 = 31,525.22 : x
  2. Step 2: Convert to fraction form
    84,120.14/126,175.26 = 31,525.22/x
  3. Step 3: Cross multiply
    84,120.14x = 126,175.26 × 31,525.22
  4. Step 4: Simplify right side
    84,120.14x = 3,977,703,263.71
  5. Step 5: Solve for x
    x = 3,977,703,263.71/84,120.14
  6. Step 6: Final answer
    x = 47,285.98

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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.