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Finding the Fourth Proportional to 43,069.68, 64,602.68 and 13,486.86

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Solution

The fourth proportional to 43,069.68, 64,602.68 and 13,486.86 is: 20,229.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,069.68 : 64,602.68 = 13,486.86 : x
  2. Step 2: Convert to fraction form
    43,069.68/64,602.68 = 13,486.86/x
  3. Step 3: Cross multiply
    43,069.68x = 64,602.68 × 13,486.86
  4. Step 4: Simplify right side
    43,069.68x = 871,287,300.78
  5. Step 5: Solve for x
    x = 871,287,300.78/43,069.68
  6. Step 6: Final answer
    x = 20,229.71

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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.