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Finding the Fourth Proportional to 62,928, 86,821.08 and 35,699.60

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Solution

The fourth proportional to 62,928, 86,821.08 and 35,699.60 is: 49,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,928 : 86,821.08 = 35,699.60 : x
  2. Step 2: Convert to fraction form
    62,928/86,821.08 = 35,699.60/x
  3. Step 3: Cross multiply
    62,928x = 86,821.08 × 35,699.60
  4. Step 4: Simplify right side
    62,928x = 3,099,477,393.46
  5. Step 5: Solve for x
    x = 3,099,477,393.46/62,928
  6. Step 6: Final answer
    x = 49,254.34

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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.