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Finding the Fourth Proportional to 66,895.37, 100,343.66 and 28,937.55

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Solution

The fourth proportional to 66,895.37, 100,343.66 and 28,937.55 is: 43,406.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,895.37 : 100,343.66 = 28,937.55 : x
  2. Step 2: Convert to fraction form
    66,895.37/100,343.66 = 28,937.55/x
  3. Step 3: Cross multiply
    66,895.37x = 100,343.66 × 28,937.55
  4. Step 4: Simplify right side
    66,895.37x = 2,903,699,533.75
  5. Step 5: Solve for x
    x = 2,903,699,533.75/66,895.37
  6. Step 6: Final answer
    x = 43,406.59

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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.