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Finding the Fourth Proportional to 50,971.75, 70,341.02 and 28,615.75

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Solution

The fourth proportional to 50,971.75, 70,341.02 and 28,615.75 is: 39,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,971.75 : 70,341.02 = 28,615.75 : x
  2. Step 2: Convert to fraction form
    50,971.75/70,341.02 = 28,615.75/x
  3. Step 3: Cross multiply
    50,971.75x = 70,341.02 × 28,615.75
  4. Step 4: Simplify right side
    50,971.75x = 2,012,861,043.07
  5. Step 5: Solve for x
    x = 2,012,861,043.07/50,971.75
  6. Step 6: Final answer
    x = 39,489.74

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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.