Home / 71,612.75-107,421.26-34,176.78

Finding the Fourth Proportional to 71,612.75, 107,421.26 and 34,176.78

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Solution

The fourth proportional to 71,612.75, 107,421.26 and 34,176.78 is: 51,266.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.75 : 107,421.26 = 34,176.78 : x
  2. Step 2: Convert to fraction form
    71,612.75/107,421.26 = 34,176.78/x
  3. Step 3: Cross multiply
    71,612.75x = 107,421.26 × 34,176.78
  4. Step 4: Simplify right side
    71,612.75x = 3,671,312,599.46
  5. Step 5: Solve for x
    x = 3,671,312,599.46/71,612.75
  6. Step 6: Final answer
    x = 51,266.18

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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.