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Finding the Fourth Proportional to 55,620.60, 76,736.88 and 38,620.32

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Solution

The fourth proportional to 55,620.60, 76,736.88 and 38,620.32 is: 53,282.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,620.60 : 76,736.88 = 38,620.32 : x
  2. Step 2: Convert to fraction form
    55,620.60/76,736.88 = 38,620.32/x
  3. Step 3: Cross multiply
    55,620.60x = 76,736.88 × 38,620.32
  4. Step 4: Simplify right side
    55,620.60x = 2,963,602,861.40
  5. Step 5: Solve for x
    x = 2,963,602,861.40/55,620.60
  6. Step 6: Final answer
    x = 53,282.47

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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.