Home / 70,910.09-97,855.65-39,078.30

Finding the Fourth Proportional to 70,910.09, 97,855.65 and 39,078.30

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Solution

The fourth proportional to 70,910.09, 97,855.65 and 39,078.30 is: 53,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,910.09 : 97,855.65 = 39,078.30 : x
  2. Step 2: Convert to fraction form
    70,910.09/97,855.65 = 39,078.30/x
  3. Step 3: Cross multiply
    70,910.09x = 97,855.65 × 39,078.30
  4. Step 4: Simplify right side
    70,910.09x = 3,824,032,447.40
  5. Step 5: Solve for x
    x = 3,824,032,447.40/70,910.09
  6. Step 6: Final answer
    x = 53,927.90

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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.