Home / 71,667.17-98,900.75-39,402.33

Finding the Fourth Proportional to 71,667.17, 98,900.75 and 39,402.33

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Solution

The fourth proportional to 71,667.17, 98,900.75 and 39,402.33 is: 54,375.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,667.17 : 98,900.75 = 39,402.33 : x
  2. Step 2: Convert to fraction form
    71,667.17/98,900.75 = 39,402.33/x
  3. Step 3: Cross multiply
    71,667.17x = 98,900.75 × 39,402.33
  4. Step 4: Simplify right side
    71,667.17x = 3,896,919,988.75
  5. Step 5: Solve for x
    x = 3,896,919,988.75/71,667.17
  6. Step 6: Final answer
    x = 54,375.25

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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.