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Finding the Fourth Proportional to 45,499.70, 68,237.40 and 13,909.70

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Solution

The fourth proportional to 45,499.70, 68,237.40 and 13,909.70 is: 20,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,499.70 : 68,237.40 = 13,909.70 : x
  2. Step 2: Convert to fraction form
    45,499.70/68,237.40 = 13,909.70/x
  3. Step 3: Cross multiply
    45,499.70x = 68,237.40 × 13,909.70
  4. Step 4: Simplify right side
    45,499.70x = 949,161,762.78
  5. Step 5: Solve for x
    x = 949,161,762.78/45,499.70
  6. Step 6: Final answer
    x = 20,860.84

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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.