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Finding the Fourth Proportional to 55,116.80, 82,718.40 and 25,538.30

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Solution

The fourth proportional to 55,116.80, 82,718.40 and 25,538.30 is: 38,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,116.80 : 82,718.40 = 25,538.30 : x
  2. Step 2: Convert to fraction form
    55,116.80/82,718.40 = 25,538.30/x
  3. Step 3: Cross multiply
    55,116.80x = 82,718.40 × 25,538.30
  4. Step 4: Simplify right side
    55,116.80x = 2,112,487,314.72
  5. Step 5: Solve for x
    x = 2,112,487,314.72/55,116.80
  6. Step 6: Final answer
    x = 38,327.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.