Home / 75,042.72-103,438.80-50,836.32

Finding the Fourth Proportional to 75,042.72, 103,438.80 and 50,836.32

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Solution

The fourth proportional to 75,042.72, 103,438.80 and 50,836.32 is: 70,072.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,042.72 : 103,438.80 = 50,836.32 : x
  2. Step 2: Convert to fraction form
    75,042.72/103,438.80 = 50,836.32/x
  3. Step 3: Cross multiply
    75,042.72x = 103,438.80 × 50,836.32
  4. Step 4: Simplify right side
    75,042.72x = 5,258,447,937.22
  5. Step 5: Solve for x
    x = 5,258,447,937.22/75,042.72
  6. Step 6: Final answer
    x = 70,072.73

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1.5x scale

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.