Home / 75,638.39-113,304.69-38,146.32

Finding the Fourth Proportional to 75,638.39, 113,304.69 and 38,146.32

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Solution

The fourth proportional to 75,638.39, 113,304.69 and 38,146.32 is: 57,142.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,638.39 : 113,304.69 = 38,146.32 : x
  2. Step 2: Convert to fraction form
    75,638.39/113,304.69 = 38,146.32/x
  3. Step 3: Cross multiply
    75,638.39x = 113,304.69 × 38,146.32
  4. Step 4: Simplify right side
    75,638.39x = 4,322,156,962.24
  5. Step 5: Solve for x
    x = 4,322,156,962.24/75,638.39
  6. Step 6: Final answer
    x = 57,142.38

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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.