Home / 43,278.54-64,920.21-21,110.82

Finding the Fourth Proportional to 43,278.54, 64,920.21 and 21,110.82

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Solution

The fourth proportional to 43,278.54, 64,920.21 and 21,110.82 is: 31,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,278.54 : 64,920.21 = 21,110.82 : x
  2. Step 2: Convert to fraction form
    43,278.54/64,920.21 = 21,110.82/x
  3. Step 3: Cross multiply
    43,278.54x = 64,920.21 × 21,110.82
  4. Step 4: Simplify right side
    43,278.54x = 1,370,518,867.67
  5. Step 5: Solve for x
    x = 1,370,518,867.67/43,278.54
  6. Step 6: Final answer
    x = 31,667.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.