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Finding the Fourth Proportional to 88,231.50, 121,759.47 and 48,487.50

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Solution

The fourth proportional to 88,231.50, 121,759.47 and 48,487.50 is: 66,912.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,231.50 : 121,759.47 = 48,487.50 : x
  2. Step 2: Convert to fraction form
    88,231.50/121,759.47 = 48,487.50/x
  3. Step 3: Cross multiply
    88,231.50x = 121,759.47 × 48,487.50
  4. Step 4: Simplify right side
    88,231.50x = 5,903,812,301.63
  5. Step 5: Solve for x
    x = 5,903,812,301.63/88,231.50
  6. Step 6: Final answer
    x = 66,912.75

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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.