Home / 71,727.48-98,987.58-39,897

Finding the Fourth Proportional to 71,727.48, 98,987.58 and 39,897

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Solution

The fourth proportional to 71,727.48, 98,987.58 and 39,897 is: 55,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,727.48 : 98,987.58 = 39,897 : x
  2. Step 2: Convert to fraction form
    71,727.48/98,987.58 = 39,897/x
  3. Step 3: Cross multiply
    71,727.48x = 98,987.58 × 39,897
  4. Step 4: Simplify right side
    71,727.48x = 3,949,307,479.26
  5. Step 5: Solve for x
    x = 3,949,307,479.26/71,727.48
  6. Step 6: Final answer
    x = 55,059.89

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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.