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Finding the Fourth Proportional to 39,842.99, 54,864.64 and 38,958.91

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Solution

The fourth proportional to 39,842.99, 54,864.64 and 38,958.91 is: 53,647.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,842.99 : 54,864.64 = 38,958.91 : x
  2. Step 2: Convert to fraction form
    39,842.99/54,864.64 = 38,958.91/x
  3. Step 3: Cross multiply
    39,842.99x = 54,864.64 × 38,958.91
  4. Step 4: Simplify right side
    39,842.99x = 2,137,466,483.48
  5. Step 5: Solve for x
    x = 2,137,466,483.48/39,842.99
  6. Step 6: Final answer
    x = 53,647.24

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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.