Home / 83,646.12-115,431.72-45,405.64

Finding the Fourth Proportional to 83,646.12, 115,431.72 and 45,405.64

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Solution

The fourth proportional to 83,646.12, 115,431.72 and 45,405.64 is: 62,659.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,646.12 : 115,431.72 = 45,405.64 : x
  2. Step 2: Convert to fraction form
    83,646.12/115,431.72 = 45,405.64/x
  3. Step 3: Cross multiply
    83,646.12x = 115,431.72 × 45,405.64
  4. Step 4: Simplify right side
    83,646.12x = 5,241,251,122.90
  5. Step 5: Solve for x
    x = 5,241,251,122.90/83,646.12
  6. Step 6: Final answer
    x = 62,659.82

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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.