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Finding the Fourth Proportional to 69,833.90, 96,372.95 and 39,620.49

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Solution

The fourth proportional to 69,833.90, 96,372.95 and 39,620.49 is: 54,677.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,833.90 : 96,372.95 = 39,620.49 : x
  2. Step 2: Convert to fraction form
    69,833.90/96,372.95 = 39,620.49/x
  3. Step 3: Cross multiply
    69,833.90x = 96,372.95 × 39,620.49
  4. Step 4: Simplify right side
    69,833.90x = 3,818,343,501.75
  5. Step 5: Solve for x
    x = 3,818,343,501.75/69,833.90
  6. Step 6: Final answer
    x = 54,677.51

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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.