Home / 84,457.90-126,736.77-31,187.19

Finding the Fourth Proportional to 84,457.90, 126,736.77 and 31,187.19

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Solution

The fourth proportional to 84,457.90, 126,736.77 and 31,187.19 is: 46,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,457.90 : 126,736.77 = 31,187.19 : x
  2. Step 2: Convert to fraction form
    84,457.90/126,736.77 = 31,187.19/x
  3. Step 3: Cross multiply
    84,457.90x = 126,736.77 × 31,187.19
  4. Step 4: Simplify right side
    84,457.90x = 3,952,563,429.87
  5. Step 5: Solve for x
    x = 3,952,563,429.87/84,457.90
  6. Step 6: Final answer
    x = 46,799.21

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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.