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Finding the Fourth Proportional to 92,900.28, 128,201.69 and 50,459.12

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Solution

The fourth proportional to 92,900.28, 128,201.69 and 50,459.12 is: 69,633.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,900.28 : 128,201.69 = 50,459.12 : x
  2. Step 2: Convert to fraction form
    92,900.28/128,201.69 = 50,459.12/x
  3. Step 3: Cross multiply
    92,900.28x = 128,201.69 × 50,459.12
  4. Step 4: Simplify right side
    92,900.28x = 6,468,944,141.98
  5. Step 5: Solve for x
    x = 6,468,944,141.98/92,900.28
  6. Step 6: Final answer
    x = 69,633.20

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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.