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Finding the Fourth Proportional to 70,091.95, 96,728.48 and 39,876.07

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Solution

The fourth proportional to 70,091.95, 96,728.48 and 39,876.07 is: 55,029.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,091.95 : 96,728.48 = 39,876.07 : x
  2. Step 2: Convert to fraction form
    70,091.95/96,728.48 = 39,876.07/x
  3. Step 3: Cross multiply
    70,091.95x = 96,728.48 × 39,876.07
  4. Step 4: Simplify right side
    70,091.95x = 3,857,151,639.47
  5. Step 5: Solve for x
    x = 3,857,151,639.47/70,091.95
  6. Step 6: Final answer
    x = 55,029.88

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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.