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Finding the Fourth Proportional to 69,888.32, 96,439.80 and 39,674.91

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Solution

The fourth proportional to 69,888.32, 96,439.80 and 39,674.91 is: 54,747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,888.32 : 96,439.80 = 39,674.91 : x
  2. Step 2: Convert to fraction form
    69,888.32/96,439.80 = 39,674.91/x
  3. Step 3: Cross multiply
    69,888.32x = 96,439.80 × 39,674.91
  4. Step 4: Simplify right side
    69,888.32x = 3,826,240,187.04
  5. Step 5: Solve for x
    x = 3,826,240,187.04/69,888.32
  6. Step 6: Final answer
    x = 54,747.92

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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.