Home / 83,920.08-115,812.64-45,682.77

Finding the Fourth Proportional to 83,920.08, 115,812.64 and 45,682.77

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Solution

The fourth proportional to 83,920.08, 115,812.64 and 45,682.77 is: 63,043.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,920.08 : 115,812.64 = 45,682.77 : x
  2. Step 2: Convert to fraction form
    83,920.08/115,812.64 = 45,682.77/x
  3. Step 3: Cross multiply
    83,920.08x = 115,812.64 × 45,682.77
  4. Step 4: Simplify right side
    83,920.08x = 5,290,642,196.21
  5. Step 5: Solve for x
    x = 5,290,642,196.21/83,920.08
  6. Step 6: Final answer
    x = 63,043.82

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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.