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Finding the Fourth Proportional to 92,992.16, 128,284.08 and 55,239.68

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Solution

The fourth proportional to 92,992.16, 128,284.08 and 55,239.68 is: 76,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,992.16 : 128,284.08 = 55,239.68 : x
  2. Step 2: Convert to fraction form
    92,992.16/128,284.08 = 55,239.68/x
  3. Step 3: Cross multiply
    92,992.16x = 128,284.08 × 55,239.68
  4. Step 4: Simplify right side
    92,992.16x = 7,086,371,528.29
  5. Step 5: Solve for x
    x = 7,086,371,528.29/92,992.16
  6. Step 6: Final answer
    x = 76,203.97

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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.