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Finding the Fourth Proportional to 66,367.72, 99,521.34 and 28,926.28

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Solution

The fourth proportional to 66,367.72, 99,521.34 and 28,926.28 is: 43,376.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,367.72 : 99,521.34 = 28,926.28 : x
  2. Step 2: Convert to fraction form
    66,367.72/99,521.34 = 28,926.28/x
  3. Step 3: Cross multiply
    66,367.72x = 99,521.34 × 28,926.28
  4. Step 4: Simplify right side
    66,367.72x = 2,878,782,146.82
  5. Step 5: Solve for x
    x = 2,878,782,146.82/66,367.72
  6. Step 6: Final answer
    x = 43,376.24

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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.