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Finding the Fourth Proportional to 62,765.60, 94,148.40 and 21,212.60

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Solution

The fourth proportional to 62,765.60, 94,148.40 and 21,212.60 is: 31,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,765.60 : 94,148.40 = 21,212.60 : x
  2. Step 2: Convert to fraction form
    62,765.60/94,148.40 = 21,212.60/x
  3. Step 3: Cross multiply
    62,765.60x = 94,148.40 × 21,212.60
  4. Step 4: Simplify right side
    62,765.60x = 1,997,132,349.84
  5. Step 5: Solve for x
    x = 1,997,132,349.84/62,765.60
  6. Step 6: Final answer
    x = 31,818.90

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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.