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Finding the Fourth Proportional to 90,274.76, 124,579.09 and 49,988.52

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Solution

The fourth proportional to 90,274.76, 124,579.09 and 49,988.52 is: 68,984.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,274.76 : 124,579.09 = 49,988.52 : x
  2. Step 2: Convert to fraction form
    90,274.76/124,579.09 = 49,988.52/x
  3. Step 3: Cross multiply
    90,274.76x = 124,579.09 × 49,988.52
  4. Step 4: Simplify right side
    90,274.76x = 6,227,525,008.25
  5. Step 5: Solve for x
    x = 6,227,525,008.25/90,274.76
  6. Step 6: Final answer
    x = 68,984.12

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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.