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Finding the Fourth Proportional to 52,718.87, 72,744.86 and 31,493.63

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Solution

The fourth proportional to 52,718.87, 72,744.86 and 31,493.63 is: 43,456.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,718.87 : 72,744.86 = 31,493.63 : x
  2. Step 2: Convert to fraction form
    52,718.87/72,744.86 = 31,493.63/x
  3. Step 3: Cross multiply
    52,718.87x = 72,744.86 × 31,493.63
  4. Step 4: Simplify right side
    52,718.87x = 2,290,999,184.05
  5. Step 5: Solve for x
    x = 2,290,999,184.05/52,718.87
  6. Step 6: Final answer
    x = 43,456.91

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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.