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Finding the Fourth Proportional to 90,269.84, 124,441.80 and 63,328.88

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Solution

The fourth proportional to 90,269.84, 124,441.80 and 63,328.88 is: 87,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,269.84 : 124,441.80 = 63,328.88 : x
  2. Step 2: Convert to fraction form
    90,269.84/124,441.80 = 63,328.88/x
  3. Step 3: Cross multiply
    90,269.84x = 124,441.80 × 63,328.88
  4. Step 4: Simplify right side
    90,269.84x = 7,880,759,819.18
  5. Step 5: Solve for x
    x = 7,880,759,819.18/90,269.84
  6. Step 6: Final answer
    x = 87,302.25

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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.