Home / 71,341.75-107,029.02-21,422.79

Finding the Fourth Proportional to 71,341.75, 107,029.02 and 21,422.79

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Solution

The fourth proportional to 71,341.75, 107,029.02 and 21,422.79 is: 32,139.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,341.75 : 107,029.02 = 21,422.79 : x
  2. Step 2: Convert to fraction form
    71,341.75/107,029.02 = 21,422.79/x
  3. Step 3: Cross multiply
    71,341.75x = 107,029.02 × 21,422.79
  4. Step 4: Simplify right side
    71,341.75x = 2,292,859,777.84
  5. Step 5: Solve for x
    x = 2,292,859,777.84/71,341.75
  6. Step 6: Final answer
    x = 32,139.10

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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.