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Finding the Fourth Proportional to 39,300, 54,239.49 and 25,182.92

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Solution

The fourth proportional to 39,300, 54,239.49 and 25,182.92 is: 34,755.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,300 : 54,239.49 = 25,182.92 : x
  2. Step 2: Convert to fraction form
    39,300/54,239.49 = 25,182.92/x
  3. Step 3: Cross multiply
    39,300x = 54,239.49 × 25,182.92
  4. Step 4: Simplify right side
    39,300x = 1,365,908,737.51
  5. Step 5: Solve for x
    x = 1,365,908,737.51/39,300
  6. Step 6: Final answer
    x = 34,755.95

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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.