Home / 71,748.12-107,622-34,194.36

Finding the Fourth Proportional to 71,748.12, 107,622 and 34,194.36

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Solution

The fourth proportional to 71,748.12, 107,622 and 34,194.36 is: 51,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748.12 : 107,622 = 34,194.36 : x
  2. Step 2: Convert to fraction form
    71,748.12/107,622 = 34,194.36/x
  3. Step 3: Cross multiply
    71,748.12x = 107,622 × 34,194.36
  4. Step 4: Simplify right side
    71,748.12x = 3,680,065,411.92
  5. Step 5: Solve for x
    x = 3,680,065,411.92/71,748.12
  6. Step 6: Final answer
    x = 51,291.45

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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.