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Finding the Fourth Proportional to 39,967.40, 59,904.42 and 30,074.88

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Solution

The fourth proportional to 39,967.40, 59,904.42 and 30,074.88 is: 45,077.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,967.40 : 59,904.42 = 30,074.88 : x
  2. Step 2: Convert to fraction form
    39,967.40/59,904.42 = 30,074.88/x
  3. Step 3: Cross multiply
    39,967.40x = 59,904.42 × 30,074.88
  4. Step 4: Simplify right side
    39,967.40x = 1,801,618,242.97
  5. Step 5: Solve for x
    x = 1,801,618,242.97/39,967.40
  6. Step 6: Final answer
    x = 45,077.19

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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.