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Finding the Fourth Proportional to 85,392.70, 127,941.42 and 66,423.22

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Solution

The fourth proportional to 85,392.70, 127,941.42 and 66,423.22 is: 99,520.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,392.70 : 127,941.42 = 66,423.22 : x
  2. Step 2: Convert to fraction form
    85,392.70/127,941.42 = 66,423.22/x
  3. Step 3: Cross multiply
    85,392.70x = 127,941.42 × 66,423.22
  4. Step 4: Simplify right side
    85,392.70x = 8,498,281,087.77
  5. Step 5: Solve for x
    x = 8,498,281,087.77/85,392.70
  6. Step 6: Final answer
    x = 99,520.00

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1.5x scale

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.