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Finding the Fourth Proportional to 66,274.53, 99,396.87 and 18,888.65

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Solution

The fourth proportional to 66,274.53, 99,396.87 and 18,888.65 is: 28,328.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,274.53 : 99,396.87 = 18,888.65 : x
  2. Step 2: Convert to fraction form
    66,274.53/99,396.87 = 18,888.65/x
  3. Step 3: Cross multiply
    66,274.53x = 99,396.87 × 18,888.65
  4. Step 4: Simplify right side
    66,274.53x = 1,877,472,688.53
  5. Step 5: Solve for x
    x = 1,877,472,688.53/66,274.53
  6. Step 6: Final answer
    x = 28,328.72

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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.