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Finding the Fourth Proportional to 90,491.62, 124,881.77 and 54,674.71

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Solution

The fourth proportional to 90,491.62, 124,881.77 and 54,674.71 is: 75,453.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,491.62 : 124,881.77 = 54,674.71 : x
  2. Step 2: Convert to fraction form
    90,491.62/124,881.77 = 54,674.71/x
  3. Step 3: Cross multiply
    90,491.62x = 124,881.77 × 54,674.71
  4. Step 4: Simplify right side
    90,491.62x = 6,827,873,973.46
  5. Step 5: Solve for x
    x = 6,827,873,973.46/90,491.62
  6. Step 6: Final answer
    x = 75,453.11

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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.