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Finding the Fourth Proportional to 84,760.71, 126,986.04 and 39,699.36

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Solution

The fourth proportional to 84,760.71, 126,986.04 and 39,699.36 is: 59,476.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,760.71 : 126,986.04 = 39,699.36 : x
  2. Step 2: Convert to fraction form
    84,760.71/126,986.04 = 39,699.36/x
  3. Step 3: Cross multiply
    84,760.71x = 126,986.04 × 39,699.36
  4. Step 4: Simplify right side
    84,760.71x = 5,041,264,516.93
  5. Step 5: Solve for x
    x = 5,041,264,516.93/84,760.71
  6. Step 6: Final answer
    x = 59,476.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.