Home / 71,669.88-98,900.19-39,837.69

Finding the Fourth Proportional to 71,669.88, 98,900.19 and 39,837.69

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Solution

The fourth proportional to 71,669.88, 98,900.19 and 39,837.69 is: 54,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,669.88 : 98,900.19 = 39,837.69 : x
  2. Step 2: Convert to fraction form
    71,669.88/98,900.19 = 39,837.69/x
  3. Step 3: Cross multiply
    71,669.88x = 98,900.19 × 39,837.69
  4. Step 4: Simplify right side
    71,669.88x = 3,939,955,110.16
  5. Step 5: Solve for x
    x = 3,939,955,110.16/71,669.88
  6. Step 6: Final answer
    x = 54,973.65

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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.