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Finding the Fourth Proportional to 88,682.50, 122,381.92 and 66,040.98

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Solution

The fourth proportional to 88,682.50, 122,381.92 and 66,040.98 is: 91,136.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,682.50 : 122,381.92 = 66,040.98 : x
  2. Step 2: Convert to fraction form
    88,682.50/122,381.92 = 66,040.98/x
  3. Step 3: Cross multiply
    88,682.50x = 122,381.92 × 66,040.98
  4. Step 4: Simplify right side
    88,682.50x = 8,082,221,931.08
  5. Step 5: Solve for x
    x = 8,082,221,931.08/88,682.50
  6. Step 6: Final answer
    x = 91,136.60

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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.