Home / 72,959.04-109,428.75-20,373.84

Finding the Fourth Proportional to 72,959.04, 109,428.75 and 20,373.84

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Solution

The fourth proportional to 72,959.04, 109,428.75 and 20,373.84 is: 30,558.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,959.04 : 109,428.75 = 20,373.84 : x
  2. Step 2: Convert to fraction form
    72,959.04/109,428.75 = 20,373.84/x
  3. Step 3: Cross multiply
    72,959.04x = 109,428.75 × 20,373.84
  4. Step 4: Simplify right side
    72,959.04x = 2,229,483,843.90
  5. Step 5: Solve for x
    x = 2,229,483,843.90/72,959.04
  6. Step 6: Final answer
    x = 30,558.02

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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.