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Finding the Fourth Proportional to 57,506.60, 86,208.70 and 51,285.80

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Solution

The fourth proportional to 57,506.60, 86,208.70 and 51,285.80 is: 76,883.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,506.60 : 86,208.70 = 51,285.80 : x
  2. Step 2: Convert to fraction form
    57,506.60/86,208.70 = 51,285.80/x
  3. Step 3: Cross multiply
    57,506.60x = 86,208.70 × 51,285.80
  4. Step 4: Simplify right side
    57,506.60x = 4,421,282,146.46
  5. Step 5: Solve for x
    x = 4,421,282,146.46/57,506.60
  6. Step 6: Final answer
    x = 76,883.04

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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.