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Finding the Fourth Proportional to 92,808.64, 128,076 and 50,367.16

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Solution

The fourth proportional to 92,808.64, 128,076 and 50,367.16 is: 69,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,808.64 : 128,076 = 50,367.16 : x
  2. Step 2: Convert to fraction form
    92,808.64/128,076 = 50,367.16/x
  3. Step 3: Cross multiply
    92,808.64x = 128,076 × 50,367.16
  4. Step 4: Simplify right side
    92,808.64x = 6,450,824,384.16
  5. Step 5: Solve for x
    x = 6,450,824,384.16/92,808.64
  6. Step 6: Final answer
    x = 69,506.72

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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.