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Finding the Fourth Proportional to 54,337.80, 81,506.70 and 30,718.20

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Solution

The fourth proportional to 54,337.80, 81,506.70 and 30,718.20 is: 46,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,337.80 : 81,506.70 = 30,718.20 : x
  2. Step 2: Convert to fraction form
    54,337.80/81,506.70 = 30,718.20/x
  3. Step 3: Cross multiply
    54,337.80x = 81,506.70 × 30,718.20
  4. Step 4: Simplify right side
    54,337.80x = 2,503,739,111.94
  5. Step 5: Solve for x
    x = 2,503,739,111.94/54,337.80
  6. Step 6: Final answer
    x = 46,077.30

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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.