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Finding the Fourth Proportional to 57,435, 79,258.86 and 31,941.40

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Solution

The fourth proportional to 57,435, 79,258.86 and 31,941.40 is: 44,078.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,435 : 79,258.86 = 31,941.40 : x
  2. Step 2: Convert to fraction form
    57,435/79,258.86 = 31,941.40/x
  3. Step 3: Cross multiply
    57,435x = 79,258.86 × 31,941.40
  4. Step 4: Simplify right side
    57,435x = 2,531,638,950.80
  5. Step 5: Solve for x
    x = 2,531,638,950.80/57,435
  6. Step 6: Final answer
    x = 44,078.33

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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.