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Finding the Fourth Proportional to 47,361.92, 65,347.76 and 28,960.40

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Solution

The fourth proportional to 47,361.92, 65,347.76 and 28,960.40 is: 39,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,361.92 : 65,347.76 = 28,960.40 : x
  2. Step 2: Convert to fraction form
    47,361.92/65,347.76 = 28,960.40/x
  3. Step 3: Cross multiply
    47,361.92x = 65,347.76 × 28,960.40
  4. Step 4: Simplify right side
    47,361.92x = 1,892,497,268.70
  5. Step 5: Solve for x
    x = 1,892,497,268.70/47,361.92
  6. Step 6: Final answer
    x = 39,958.20

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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.