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Finding the Fourth Proportional to 43,868.80, 65,611.20 and 39,222.40

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Solution

The fourth proportional to 43,868.80, 65,611.20 and 39,222.40 is: 58,661.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,868.80 : 65,611.20 = 39,222.40 : x
  2. Step 2: Convert to fraction form
    43,868.80/65,611.20 = 39,222.40/x
  3. Step 3: Cross multiply
    43,868.80x = 65,611.20 × 39,222.40
  4. Step 4: Simplify right side
    43,868.80x = 2,573,428,730.88
  5. Step 5: Solve for x
    x = 2,573,428,730.88/43,868.80
  6. Step 6: Final answer
    x = 58,661.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.