Home / 81,503.68-112,403.28-58,836.64

Finding the Fourth Proportional to 81,503.68, 112,403.28 and 58,836.64

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Solution

The fourth proportional to 81,503.68, 112,403.28 and 58,836.64 is: 81,142.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,503.68 : 112,403.28 = 58,836.64 : x
  2. Step 2: Convert to fraction form
    81,503.68/112,403.28 = 58,836.64/x
  3. Step 3: Cross multiply
    81,503.68x = 112,403.28 × 58,836.64
  4. Step 4: Simplify right side
    81,503.68x = 6,613,431,320.18
  5. Step 5: Solve for x
    x = 6,613,431,320.18/81,503.68
  6. Step 6: Final answer
    x = 81,142.73

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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.