Home / 71,110.67-98,130.85-39,278.88

Finding the Fourth Proportional to 71,110.67, 98,130.85 and 39,278.88

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Solution

The fourth proportional to 71,110.67, 98,130.85 and 39,278.88 is: 54,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,110.67 : 98,130.85 = 39,278.88 : x
  2. Step 2: Convert to fraction form
    71,110.67/98,130.85 = 39,278.88/x
  3. Step 3: Cross multiply
    71,110.67x = 98,130.85 × 39,278.88
  4. Step 4: Simplify right side
    71,110.67x = 3,854,469,881.45
  5. Step 5: Solve for x
    x = 3,854,469,881.45/71,110.67
  6. Step 6: Final answer
    x = 54,203.82

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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.