Home / 90,108.09-124,344.13-49,819.50

Finding the Fourth Proportional to 90,108.09, 124,344.13 and 49,819.50

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Solution

The fourth proportional to 90,108.09, 124,344.13 and 49,819.50 is: 68,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,108.09 : 124,344.13 = 49,819.50 : x
  2. Step 2: Convert to fraction form
    90,108.09/124,344.13 = 49,819.50/x
  3. Step 3: Cross multiply
    90,108.09x = 124,344.13 × 49,819.50
  4. Step 4: Simplify right side
    90,108.09x = 6,194,762,384.54
  5. Step 5: Solve for x
    x = 6,194,762,384.54/90,108.09
  6. Step 6: Final answer
    x = 68,748.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.