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Finding the Fourth Proportional to 62,728.64, 86,582.10 and 38,841.74

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Solution

The fourth proportional to 62,728.64, 86,582.10 and 38,841.74 is: 53,611.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,728.64 : 86,582.10 = 38,841.74 : x
  2. Step 2: Convert to fraction form
    62,728.64/86,582.10 = 38,841.74/x
  3. Step 3: Cross multiply
    62,728.64x = 86,582.10 × 38,841.74
  4. Step 4: Simplify right side
    62,728.64x = 3,362,999,416.85
  5. Step 5: Solve for x
    x = 3,362,999,416.85/62,728.64
  6. Step 6: Final answer
    x = 53,611.87

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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.