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Finding the Fourth Proportional to 88,681.50, 122,380.54 and 66,039.98

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Solution

The fourth proportional to 88,681.50, 122,380.54 and 66,039.98 is: 91,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,681.50 : 122,380.54 = 66,039.98 : x
  2. Step 2: Convert to fraction form
    88,681.50/122,380.54 = 66,039.98/x
  3. Step 3: Cross multiply
    88,681.50x = 122,380.54 × 66,039.98
  4. Step 4: Simplify right side
    88,681.50x = 8,082,007,636.99
  5. Step 5: Solve for x
    x = 8,082,007,636.99/88,681.50
  6. Step 6: Final answer
    x = 91,135.22

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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.