Home / 83,651.36-115,421.42-49,655.05

Finding the Fourth Proportional to 83,651.36, 115,421.42 and 49,655.05

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Solution

The fourth proportional to 83,651.36, 115,421.42 and 49,655.05 is: 68,513.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.36 : 115,421.42 = 49,655.05 : x
  2. Step 2: Convert to fraction form
    83,651.36/115,421.42 = 49,655.05/x
  3. Step 3: Cross multiply
    83,651.36x = 115,421.42 × 49,655.05
  4. Step 4: Simplify right side
    83,651.36x = 5,731,256,216.76
  5. Step 5: Solve for x
    x = 5,731,256,216.76/83,651.36
  6. Step 6: Final answer
    x = 68,513.61

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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.