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Finding the Fourth Proportional to 43,099.59, 64,649.39 and 13,520.01

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Solution

The fourth proportional to 43,099.59, 64,649.39 and 13,520.01 is: 20,280.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,099.59 : 64,649.39 = 13,520.01 : x
  2. Step 2: Convert to fraction form
    43,099.59/64,649.39 = 13,520.01/x
  3. Step 3: Cross multiply
    43,099.59x = 64,649.39 × 13,520.01
  4. Step 4: Simplify right side
    43,099.59x = 874,060,331.69
  5. Step 5: Solve for x
    x = 874,060,331.69/43,099.59
  6. Step 6: Final answer
    x = 20,280.02

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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.