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Finding the Fourth Proportional to 90,203.53, 124,478.98 and 49,914.88

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Solution

The fourth proportional to 90,203.53, 124,478.98 and 49,914.88 is: 68,881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,203.53 : 124,478.98 = 49,914.88 : x
  2. Step 2: Convert to fraction form
    90,203.53/124,478.98 = 49,914.88/x
  3. Step 3: Cross multiply
    90,203.53x = 124,478.98 × 49,914.88
  4. Step 4: Simplify right side
    90,203.53x = 6,213,353,349.22
  5. Step 5: Solve for x
    x = 6,213,353,349.22/90,203.53
  6. Step 6: Final answer
    x = 68,881.49

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1.5x scale

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.