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Finding the Fourth Proportional to 69,790.84, 96,309.30 and 39,578.92

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Solution

The fourth proportional to 69,790.84, 96,309.30 and 39,578.92 is: 54,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,790.84 : 96,309.30 = 39,578.92 : x
  2. Step 2: Convert to fraction form
    69,790.84/96,309.30 = 39,578.92/x
  3. Step 3: Cross multiply
    69,790.84x = 96,309.30 × 39,578.92
  4. Step 4: Simplify right side
    69,790.84x = 3,811,818,079.96
  5. Step 5: Solve for x
    x = 3,811,818,079.96/69,790.84
  6. Step 6: Final answer
    x = 54,617.74

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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.