Home / 42,713.45-64,078.21-21,377.56

Finding the Fourth Proportional to 42,713.45, 64,078.21 and 21,377.56

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Solution

The fourth proportional to 42,713.45, 64,078.21 and 21,377.56 is: 32,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,713.45 : 64,078.21 = 21,377.56 : x
  2. Step 2: Convert to fraction form
    42,713.45/64,078.21 = 21,377.56/x
  3. Step 3: Cross multiply
    42,713.45x = 64,078.21 × 21,377.56
  4. Step 4: Simplify right side
    42,713.45x = 1,369,835,778.97
  5. Step 5: Solve for x
    x = 1,369,835,778.97/42,713.45
  6. Step 6: Final answer
    x = 32,070.36

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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.