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Finding the Fourth Proportional to 92,805.26, 128,071.31 and 50,363.78

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Solution

The fourth proportional to 92,805.26, 128,071.31 and 50,363.78 is: 69,502.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,805.26 : 128,071.31 = 50,363.78 : x
  2. Step 2: Convert to fraction form
    92,805.26/128,071.31 = 50,363.78/x
  3. Step 3: Cross multiply
    92,805.26x = 128,071.31 × 50,363.78
  4. Step 4: Simplify right side
    92,805.26x = 6,450,154,388.98
  5. Step 5: Solve for x
    x = 6,450,154,388.98/92,805.26
  6. Step 6: Final answer
    x = 69,502.04

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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.