Home / 81,721.95-112,770.22-45,917.92

Finding the Fourth Proportional to 81,721.95, 112,770.22 and 45,917.92

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Solution

The fourth proportional to 81,721.95, 112,770.22 and 45,917.92 is: 63,363.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.95 : 112,770.22 = 45,917.92 : x
  2. Step 2: Convert to fraction form
    81,721.95/112,770.22 = 45,917.92/x
  3. Step 3: Cross multiply
    81,721.95x = 112,770.22 × 45,917.92
  4. Step 4: Simplify right side
    81,721.95x = 5,178,173,940.34
  5. Step 5: Solve for x
    x = 5,178,173,940.34/81,721.95
  6. Step 6: Final answer
    x = 63,363.32

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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.