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Finding the Fourth Proportional to 92,864.78, 128,153.49 and 50,423.30

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Solution

The fourth proportional to 92,864.78, 128,153.49 and 50,423.30 is: 69,584.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,864.78 : 128,153.49 = 50,423.30 : x
  2. Step 2: Convert to fraction form
    92,864.78/128,153.49 = 50,423.30/x
  3. Step 3: Cross multiply
    92,864.78x = 128,153.49 × 50,423.30
  4. Step 4: Simplify right side
    92,864.78x = 6,461,921,872.32
  5. Step 5: Solve for x
    x = 6,461,921,872.32/92,864.78
  6. Step 6: Final answer
    x = 69,584.20

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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.