Home / 72,941.32-109,423.64-30,821.80

Finding the Fourth Proportional to 72,941.32, 109,423.64 and 30,821.80

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Solution

The fourth proportional to 72,941.32, 109,423.64 and 30,821.80 is: 46,237.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,941.32 : 109,423.64 = 30,821.80 : x
  2. Step 2: Convert to fraction form
    72,941.32/109,423.64 = 30,821.80/x
  3. Step 3: Cross multiply
    72,941.32x = 109,423.64 × 30,821.80
  4. Step 4: Simplify right side
    72,941.32x = 3,372,633,547.35
  5. Step 5: Solve for x
    x = 3,372,633,547.35/72,941.32
  6. Step 6: Final answer
    x = 46,237.63

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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.