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Finding the Fourth Proportional to 62,640.96, 86,346.40 and 47,472.96

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Solution

The fourth proportional to 62,640.96, 86,346.40 and 47,472.96 is: 65,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640.96 : 86,346.40 = 47,472.96 : x
  2. Step 2: Convert to fraction form
    62,640.96/86,346.40 = 47,472.96/x
  3. Step 3: Cross multiply
    62,640.96x = 86,346.40 × 47,472.96
  4. Step 4: Simplify right side
    62,640.96x = 4,099,119,193.34
  5. Step 5: Solve for x
    x = 4,099,119,193.34/62,640.96
  6. Step 6: Final answer
    x = 65,438.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.