Home / 71,239.13-98,309.59-39,407.34

Finding the Fourth Proportional to 71,239.13, 98,309.59 and 39,407.34

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Solution

The fourth proportional to 71,239.13, 98,309.59 and 39,407.34 is: 54,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,239.13 : 98,309.59 = 39,407.34 : x
  2. Step 2: Convert to fraction form
    71,239.13/98,309.59 = 39,407.34/x
  3. Step 3: Cross multiply
    71,239.13x = 98,309.59 × 39,407.34
  4. Step 4: Simplify right side
    71,239.13x = 3,874,119,438.39
  5. Step 5: Solve for x
    x = 3,874,119,438.39/71,239.13
  6. Step 6: Final answer
    x = 54,381.90

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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.