Home / 71,669.09-98,904.53-39,405.07

Finding the Fourth Proportional to 71,669.09, 98,904.53 and 39,405.07

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Solution

The fourth proportional to 71,669.09, 98,904.53 and 39,405.07 is: 54,379.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,669.09 : 98,904.53 = 39,405.07 : x
  2. Step 2: Convert to fraction form
    71,669.09/98,904.53 = 39,405.07/x
  3. Step 3: Cross multiply
    71,669.09x = 98,904.53 × 39,405.07
  4. Step 4: Simplify right side
    71,669.09x = 3,897,339,730.94
  5. Step 5: Solve for x
    x = 3,897,339,730.94/71,669.09
  6. Step 6: Final answer
    x = 54,379.65

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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.