Home / 74,612.64-111,965.04-30,239.76

Finding the Fourth Proportional to 74,612.64, 111,965.04 and 30,239.76

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Solution

The fourth proportional to 74,612.64, 111,965.04 and 30,239.76 is: 45,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,612.64 : 111,965.04 = 30,239.76 : x
  2. Step 2: Convert to fraction form
    74,612.64/111,965.04 = 30,239.76/x
  3. Step 3: Cross multiply
    74,612.64x = 111,965.04 × 30,239.76
  4. Step 4: Simplify right side
    74,612.64x = 3,385,795,937.99
  5. Step 5: Solve for x
    x = 3,385,795,937.99/74,612.64
  6. Step 6: Final answer
    x = 45,378.32

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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.