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Finding the Fourth Proportional to 80,602.64, 111,224.04 and 74,658.32

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Solution

The fourth proportional to 80,602.64, 111,224.04 and 74,658.32 is: 103,021.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,602.64 : 111,224.04 = 74,658.32 : x
  2. Step 2: Convert to fraction form
    80,602.64/111,224.04 = 74,658.32/x
  3. Step 3: Cross multiply
    80,602.64x = 111,224.04 × 74,658.32
  4. Step 4: Simplify right side
    80,602.64x = 8,303,799,970.01
  5. Step 5: Solve for x
    x = 8,303,799,970.01/80,602.64
  6. Step 6: Final answer
    x = 103,021.44

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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.