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Finding the Fourth Proportional to 39,903.40, 59,903.70 and 39,611.80

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Solution

The fourth proportional to 39,903.40, 59,903.70 and 39,611.80 is: 59,465.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,903.40 : 59,903.70 = 39,611.80 : x
  2. Step 2: Convert to fraction form
    39,903.40/59,903.70 = 39,611.80/x
  3. Step 3: Cross multiply
    39,903.40x = 59,903.70 × 39,611.80
  4. Step 4: Simplify right side
    39,903.40x = 2,372,893,383.66
  5. Step 5: Solve for x
    x = 2,372,893,383.66/39,903.40
  6. Step 6: Final answer
    x = 59,465.94

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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.