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Finding the Fourth Proportional to 43,099.98, 64,649.86 and 13,520.04

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Solution

The fourth proportional to 43,099.98, 64,649.86 and 13,520.04 is: 20,280.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,099.98 : 64,649.86 = 13,520.04 : x
  2. Step 2: Convert to fraction form
    43,099.98/64,649.86 = 13,520.04/x
  3. Step 3: Cross multiply
    43,099.98x = 64,649.86 × 13,520.04
  4. Step 4: Simplify right side
    43,099.98x = 874,068,693.19
  5. Step 5: Solve for x
    x = 874,068,693.19/43,099.98
  6. Step 6: Final answer
    x = 20,280.03

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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.