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Finding the Fourth Proportional to 43,692, 65,835.60 and 38,918.16

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Solution

The fourth proportional to 43,692, 65,835.60 and 38,918.16 is: 58,642.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,692 : 65,835.60 = 38,918.16 : x
  2. Step 2: Convert to fraction form
    43,692/65,835.60 = 38,918.16/x
  3. Step 3: Cross multiply
    43,692x = 65,835.60 × 38,918.16
  4. Step 4: Simplify right side
    43,692x = 2,562,200,414.50
  5. Step 5: Solve for x
    x = 2,562,200,414.50/43,692
  6. Step 6: Final answer
    x = 58,642.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.