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Finding the Fourth Proportional to 91,967.76, 137,789.64 and 65,535.84

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Solution

The fourth proportional to 91,967.76, 137,789.64 and 65,535.84 is: 98,188.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,967.76 : 137,789.64 = 65,535.84 : x
  2. Step 2: Convert to fraction form
    91,967.76/137,789.64 = 65,535.84/x
  3. Step 3: Cross multiply
    91,967.76x = 137,789.64 × 65,535.84
  4. Step 4: Simplify right side
    91,967.76x = 9,030,159,800.70
  5. Step 5: Solve for x
    x = 9,030,159,800.70/91,967.76
  6. Step 6: Final answer
    x = 98,188.32

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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.