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Finding the Fourth Proportional to 43,134.88, 64,790.88 and 28,364.80

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Solution

The fourth proportional to 43,134.88, 64,790.88 and 28,364.80 is: 42,605.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,134.88 : 64,790.88 = 28,364.80 : x
  2. Step 2: Convert to fraction form
    43,134.88/64,790.88 = 28,364.80/x
  3. Step 3: Cross multiply
    43,134.88x = 64,790.88 × 28,364.80
  4. Step 4: Simplify right side
    43,134.88x = 1,837,780,353.02
  5. Step 5: Solve for x
    x = 1,837,780,353.02/43,134.88
  6. Step 6: Final answer
    x = 42,605.44

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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.