Home / 74,628.40-112,072.20-39,636.40

Finding the Fourth Proportional to 74,628.40, 112,072.20 and 39,636.40

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Solution

The fourth proportional to 74,628.40, 112,072.20 and 39,636.40 is: 59,523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,628.40 : 112,072.20 = 39,636.40 : x
  2. Step 2: Convert to fraction form
    74,628.40/112,072.20 = 39,636.40/x
  3. Step 3: Cross multiply
    74,628.40x = 112,072.20 × 39,636.40
  4. Step 4: Simplify right side
    74,628.40x = 4,442,138,548.08
  5. Step 5: Solve for x
    x = 4,442,138,548.08/74,628.40
  6. Step 6: Final answer
    x = 59,523.43

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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.