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Finding the Fourth Proportional to 66,991.68, 100,487.52 and 29,543.76

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Solution

The fourth proportional to 66,991.68, 100,487.52 and 29,543.76 is: 44,315.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,991.68 : 100,487.52 = 29,543.76 : x
  2. Step 2: Convert to fraction form
    66,991.68/100,487.52 = 29,543.76/x
  3. Step 3: Cross multiply
    66,991.68x = 100,487.52 × 29,543.76
  4. Step 4: Simplify right side
    66,991.68x = 2,968,779,173.88
  5. Step 5: Solve for x
    x = 2,968,779,173.88/66,991.68
  6. Step 6: Final answer
    x = 44,315.64

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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.