Home / 39,988.94-55,072.50-39,116.96

Finding the Fourth Proportional to 39,988.94, 55,072.50 and 39,116.96

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Solution

The fourth proportional to 39,988.94, 55,072.50 and 39,116.96 is: 53,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.94 : 55,072.50 = 39,116.96 : x
  2. Step 2: Convert to fraction form
    39,988.94/55,072.50 = 39,116.96/x
  3. Step 3: Cross multiply
    39,988.94x = 55,072.50 × 39,116.96
  4. Step 4: Simplify right side
    39,988.94x = 2,154,268,779.60
  5. Step 5: Solve for x
    x = 2,154,268,779.60/39,988.94
  6. Step 6: Final answer
    x = 53,871.61

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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.