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Finding the Fourth Proportional to 40,728.40, 61,092.60 and 30,886.90

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Solution

The fourth proportional to 40,728.40, 61,092.60 and 30,886.90 is: 46,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.40 : 61,092.60 = 30,886.90 : x
  2. Step 2: Convert to fraction form
    40,728.40/61,092.60 = 30,886.90/x
  3. Step 3: Cross multiply
    40,728.40x = 61,092.60 × 30,886.90
  4. Step 4: Simplify right side
    40,728.40x = 1,886,961,026.94
  5. Step 5: Solve for x
    x = 1,886,961,026.94/40,728.40
  6. Step 6: Final answer
    x = 46,330.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.