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Finding the Fourth Proportional to 71,612.94, 98,735 and 51,219.56

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Solution

The fourth proportional to 71,612.94, 98,735 and 51,219.56 is: 70,618.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.94 : 98,735 = 51,219.56 : x
  2. Step 2: Convert to fraction form
    71,612.94/98,735 = 51,219.56/x
  3. Step 3: Cross multiply
    71,612.94x = 98,735 × 51,219.56
  4. Step 4: Simplify right side
    71,612.94x = 5,057,163,256.60
  5. Step 5: Solve for x
    x = 5,057,163,256.60/71,612.94
  6. Step 6: Final answer
    x = 70,618.01

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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.