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Finding the Fourth Proportional to 79,972.64, 119,772.12 and 63,220.16

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Solution

The fourth proportional to 79,972.64, 119,772.12 and 63,220.16 is: 94,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,972.64 : 119,772.12 = 63,220.16 : x
  2. Step 2: Convert to fraction form
    79,972.64/119,772.12 = 63,220.16/x
  3. Step 3: Cross multiply
    79,972.64x = 119,772.12 × 63,220.16
  4. Step 4: Simplify right side
    79,972.64x = 7,572,012,589.94
  5. Step 5: Solve for x
    x = 7,572,012,589.94/79,972.64
  6. Step 6: Final answer
    x = 94,682.54

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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.