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Finding the Fourth Proportional to 90,239.58, 124,245.30 and 79,476.84

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Solution

The fourth proportional to 90,239.58, 124,245.30 and 79,476.84 is: 109,426.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,239.58 : 124,245.30 = 79,476.84 : x
  2. Step 2: Convert to fraction form
    90,239.58/124,245.30 = 79,476.84/x
  3. Step 3: Cross multiply
    90,239.58x = 124,245.30 × 79,476.84
  4. Step 4: Simplify right side
    90,239.58x = 9,874,623,828.85
  5. Step 5: Solve for x
    x = 9,874,623,828.85/90,239.58
  6. Step 6: Final answer
    x = 109,426.75

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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.