Home / 71,221.75-98,277.51-39,386.32

Finding the Fourth Proportional to 71,221.75, 98,277.51 and 39,386.32

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Solution

The fourth proportional to 71,221.75, 98,277.51 and 39,386.32 is: 54,348.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,221.75 : 98,277.51 = 39,386.32 : x
  2. Step 2: Convert to fraction form
    71,221.75/98,277.51 = 39,386.32/x
  3. Step 3: Cross multiply
    71,221.75x = 98,277.51 × 39,386.32
  4. Step 4: Simplify right side
    71,221.75x = 3,870,789,457.66
  5. Step 5: Solve for x
    x = 3,870,789,457.66/71,221.75
  6. Step 6: Final answer
    x = 54,348.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.