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Finding the Fourth Proportional to 55,616.60, 76,731.36 and 38,616.32

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Solution

The fourth proportional to 55,616.60, 76,731.36 and 38,616.32 is: 53,276.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,616.60 : 76,731.36 = 38,616.32 : x
  2. Step 2: Convert to fraction form
    55,616.60/76,731.36 = 38,616.32/x
  3. Step 3: Cross multiply
    55,616.60x = 76,731.36 × 38,616.32
  4. Step 4: Simplify right side
    55,616.60x = 2,963,082,751.80
  5. Step 5: Solve for x
    x = 2,963,082,751.80/55,616.60
  6. Step 6: Final answer
    x = 53,276.95

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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.