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Finding the Fourth Proportional to 92,921.04, 128,238.84 and 52,647.60

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Solution

The fourth proportional to 92,921.04, 128,238.84 and 52,647.60 is: 72,658.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,921.04 : 128,238.84 = 52,647.60 : x
  2. Step 2: Convert to fraction form
    92,921.04/128,238.84 = 52,647.60/x
  3. Step 3: Cross multiply
    92,921.04x = 128,238.84 × 52,647.60
  4. Step 4: Simplify right side
    92,921.04x = 6,751,467,152.78
  5. Step 5: Solve for x
    x = 6,751,467,152.78/92,921.04
  6. Step 6: Final answer
    x = 72,658.11

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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.