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Finding the Fourth Proportional to 63,727.60, 87,943.80 and 35,431.60

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Solution

The fourth proportional to 63,727.60, 87,943.80 and 35,431.60 is: 48,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,727.60 : 87,943.80 = 35,431.60 : x
  2. Step 2: Convert to fraction form
    63,727.60/87,943.80 = 35,431.60/x
  3. Step 3: Cross multiply
    63,727.60x = 87,943.80 × 35,431.60
  4. Step 4: Simplify right side
    63,727.60x = 3,115,989,544.08
  5. Step 5: Solve for x
    x = 3,115,989,544.08/63,727.60
  6. Step 6: Final answer
    x = 48,895.45

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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.