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Finding the Fourth Proportional to 89,281.31, 133,946.87 and 72,797.00

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Solution

The fourth proportional to 89,281.31, 133,946.87 and 72,797.00 is: 109,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,281.31 : 133,946.87 = 72,797.00 : x
  2. Step 2: Convert to fraction form
    89,281.31/133,946.87 = 72,797.00/x
  3. Step 3: Cross multiply
    89,281.31x = 133,946.87 × 72,797.00
  4. Step 4: Simplify right side
    89,281.31x = 9,750,929,261.67
  5. Step 5: Solve for x
    x = 9,750,929,261.67/89,281.31
  6. Step 6: Final answer
    x = 109,215.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.