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Finding the Fourth Proportional to 64,447.94, 88,994.65 and 40,290.20

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Solution

The fourth proportional to 64,447.94, 88,994.65 and 40,290.20 is: 55,635.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,447.94 : 88,994.65 = 40,290.20 : x
  2. Step 2: Convert to fraction form
    64,447.94/88,994.65 = 40,290.20/x
  3. Step 3: Cross multiply
    64,447.94x = 88,994.65 × 40,290.20
  4. Step 4: Simplify right side
    64,447.94x = 3,585,611,701.73
  5. Step 5: Solve for x
    x = 3,585,611,701.73/64,447.94
  6. Step 6: Final answer
    x = 55,635.79

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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.