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Finding the Fourth Proportional to 39,871.80, 59,807.70 and 33,359.40

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Solution

The fourth proportional to 39,871.80, 59,807.70 and 33,359.40 is: 50,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.80 : 59,807.70 = 33,359.40 : x
  2. Step 2: Convert to fraction form
    39,871.80/59,807.70 = 33,359.40/x
  3. Step 3: Cross multiply
    39,871.80x = 59,807.70 × 33,359.40
  4. Step 4: Simplify right side
    39,871.80x = 1,995,148,987.38
  5. Step 5: Solve for x
    x = 1,995,148,987.38/39,871.80
  6. Step 6: Final answer
    x = 50,039.10

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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.