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Finding the Fourth Proportional to 66,292.70, 99,329.70 and 56,451.20

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Solution

The fourth proportional to 66,292.70, 99,329.70 and 56,451.20 is: 84,583.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,292.70 : 99,329.70 = 56,451.20 : x
  2. Step 2: Convert to fraction form
    66,292.70/99,329.70 = 56,451.20/x
  3. Step 3: Cross multiply
    66,292.70x = 99,329.70 × 56,451.20
  4. Step 4: Simplify right side
    66,292.70x = 5,607,280,760.64
  5. Step 5: Solve for x
    x = 5,607,280,760.64/66,292.70
  6. Step 6: Final answer
    x = 84,583.68

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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.