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Finding the Fourth Proportional to 66,361.92, 99,510.48 and 28,953.60

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Solution

The fourth proportional to 66,361.92, 99,510.48 and 28,953.60 is: 43,416.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,361.92 : 99,510.48 = 28,953.60 : x
  2. Step 2: Convert to fraction form
    66,361.92/99,510.48 = 28,953.60/x
  3. Step 3: Cross multiply
    66,361.92x = 99,510.48 × 28,953.60
  4. Step 4: Simplify right side
    66,361.92x = 2,881,186,633.73
  5. Step 5: Solve for x
    x = 2,881,186,633.73/66,361.92
  6. Step 6: Final answer
    x = 43,416.26

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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.