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Finding the Fourth Proportional to 92,816.26, 128,088.34 and 52,530

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Solution

The fourth proportional to 92,816.26, 128,088.34 and 52,530 is: 72,492.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,816.26 : 128,088.34 = 52,530 : x
  2. Step 2: Convert to fraction form
    92,816.26/128,088.34 = 52,530/x
  3. Step 3: Cross multiply
    92,816.26x = 128,088.34 × 52,530
  4. Step 4: Simplify right side
    92,816.26x = 6,728,480,500.20
  5. Step 5: Solve for x
    x = 6,728,480,500.20/92,816.26
  6. Step 6: Final answer
    x = 72,492.48

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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.